{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10449019",
    "entityType": "User",
    "nonce": "0x81a4e37333d041d056042dc3fd31303b59e222d3c16d744e0a4ccf882d9c9315",
    "signature": "0x71309b99f7219db46bbe4c6283e73e81598145e95b647d46c95b0217c6c266e43f7b750ec839ac99d2e82abef56eabd37fdc695b267a5fa5eaee3d362399a6001c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}