i want to access a substring from the _payload of the integration that it recieves for alerts

[Mohd Aamir Mir]

i have an alert for which i want to basically append the service name at the end of the title when it send notifications to jira(opsgenie)

sharing the complete payload at the end..

i want the value of "metric.labels.destination_service_name" to show dynamically in the description or title
eg.
metric.labels.destination_service_name = \\\"mp-customer-catalog-api\\\"\"

currently i am able to access the below string from _payload json  as

payload: resource.type = "k8s_pod" AND metric.type = "istio.io/service/client/request_count" AND metric.labels.destination_service_name = "mp-customer-catalog-api"

but since jira doesnt support regex directly in  the alert rules i am not able to extract the value of metric.labels.destination_service_name which is "mp-customer-catalog-api"

when i am setting
payload: {{_payload.incident.condition.conditionThreshold.filter}}
in the alert rule of integration (create alert)

this is the full payload 
{"_incomingData":{"integrationType":"GoogleStackdriver","_payload":"(len:2188) {\n \"incident\": {\n \"condition\": {\n \"conditionThreshold\": {\n \"aggregations\": [\n {\n \"alignmentPeriod\": \"60s\",\n \"crossSeriesReducer\": \"REDUCE_SUM\",\n \"groupByFields\": [\n \"metric.label.destination_service_name\"\n ],\n \"perSeriesAligner\": \"ALIGN_RATE\"\n }\n ],\n \"comparison\": \"COMPARISON_GT\",\n \"duration\": \"60s\",\n \"filter\": \"resource.type = \\\"k8s_pod\\\" AND metric.type = \\\"istio.io/service/client/request_count\\\" AND metric.labels.destination_service_name = \\\"mp-customer-catalog-api\\\"\",\n \"thresholdValue\": 1400,\n \"trigger\": {\n \"count\": 1\n }\n },\n \"displayName\": \"TEST COM Gateway to Client 503 - \",\n \"name\": \"projects/noonprd-mp/alertPolicies/17127010963740233260/conditions/16826668787060541546\"\n },\n \"condition_name\": \"TEST COM Gateway to Client 503 - \",\n \"ended_at\": null,\n \"incident_id\": \"0.nt3l0e7hjlet\",\n \"metadata\": {\n \"system_labels\": {},\n \"user_labels\": {}\n },\n \"metric\": {\n \"displayName\": \"Client Request Count\",\n \"labels\": {},\n \"type\": \"istio.io/service/client/request_count\"\n },\n \"observed_value\": \"1743.717\",\n \"policy_name\": \"[mp-devops] TEST COM Gateway to Client 503 - \",\n \"policy_user_labels\": {\n \"created_via\": \"pulumi\",\n \"squad_code\": \"tech_noon_devops\"\n },\n \"resource\": {\n \"labels\": {\n \"project_id\": \"noonprd-mp\"\n },\n \"type\": \"k8s_pod\"\n },\n \"resource_id\": \"\",\n \"resource_name\": \"noonprd-mp Kubernetes Pod labels {project_id=noonprd-mp}\",\n \"resource_type_display_name\": \"Kubernetes Pod\",\n \"scoping_project_id\": \"noonprd-mp\",\n \"scoping_project_number\": 497356379434,\n \"severity\": \"No severity\",\n \"started_at\": 1748851104,\n \"state\": \"open\",\n \"summary\": \"Client Request Count for noonprd-mp Kubernetes Pod labels {project_id=noonprd-mp} is above the threshold of 1400.000 with a value","_httpParams":{"apiKey":"..."},"httpUrl":"/v1/json/googlestackdriver","teamId":"16750cfd-2530-4ee0-8c50-60f1a67f9925","incomingDataId":"98bcb990-76a0-41f0-b2c7-434ae978d350","_httpHeaders":{"User-Agent":"Google-Alerts","X-Amz-Cf-Id":"ZX-UquP73UP9bsfn_OLtPffUzzG-g0yQ5wgxvQVEGC-MgoRkBRxEPg==","X-Forwarded-For":"142.250.32.40, 10.20.17.243, 10.255.0.13, 10.18.116.51","Accept-Encoding":"gzip, deflate, br","Content-Length":"2188","X-Amzn-Trace-Id":"Self=1-683d59a0-292b07c872393bd95a63cbb3;Root=1-683d59a0-359276d94cf4a9d708a28379","Content-Type":"application/json"}}}