{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "187770916",
    "entityType": "User",
    "nonce": "0x18bd7a3a95516bb6f5940247b4f4b53a9de256cd2f06b8865b45996a1ef7d10c",
    "signature": "0x07a13b25a89c029feca9074f451ad8be1555709c3f166f1803130675e06d5c27218b2214f9e43eb625fe64a3647d5aeaf5cf507de6a711dee57f235d7067061f1c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}