{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "615702798",
    "entityType": "User",
    "nonce": "0x63e576a93e7e42d34cf186e400a0f68f25218dc2eb31442fc6c65449a9133533",
    "signature": "0x69a9f5f6a33f5c6459061888f604ca0e635a511b6707ac8a6598b8202be3062e6f27cb10bb6c7a44c6b9513a01e0544b89172d9f58eb0abe12a872ca8803ef061c",
    "signer": "0x9FF2A7F5Fab732dA57359bb3eD63a95511bD1329",
    "userId": "67863854"
  }
}