{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50672",
    "entityType": "User",
    "nonce": "0x0cb9bd36873dcbccebdb2a32c2772d8bc1973f7991710334761a32163f6f079a",
    "signature": "0xd3a05fe820fe0df98ff021581ca324d32a47539d9340fe00f6e8c846ebeddb75084b4043699d3ce4e9be4d1f399a39a18e925c8309130b6a3356db25cfad8c9e1b",
    "signer": "0x6B9519cF48DB3f140784848EF3Bd17E4CAfA71C6",
    "userId": "868140613"
  }
}