{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "639977873",
    "entityType": "User",
    "nonce": "0xf3c6948e7edbea235ebf4b5e55cad5ae7ee66fcd0b1885fbfa22f53ae37bd6f3",
    "signature": "0xacfd5098d9c7a874fb0cf3e4d56f2fc2ecb800a62ddde8bee8da845096d989dd4d55d3a09a94512ccf24e6684b22ea0197680e7c7df6fe01874363a1035a0eb31c",
    "signer": "0x14A55CAAD52a18f76025A94865ce06ED8A0Ea2cC",
    "userId": "653598798"
  }
}