{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "258307",
    "entityType": "User",
    "nonce": "0x3899aed7bba7589d31b228c4b4c846d2dce1eeb24f2b3e39a2c8f95d333f7266",
    "signature": "0x29be2e4e33a284fd475b2a9f5c6bc804030bcc913e12a390229eed89b625f1753deadfa630f1a3cc7a533e3c72e9847f57fe93fe643ba5dfcddc6230d37b223f1b",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}