{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "48340",
    "entityType": "User",
    "nonce": "0xb2a4a61b25ed3494260320bfcdcab260b0d7f134bb0db20c83bc4c349905caa1",
    "signature": "0x12bf8b30b3f6c4ea8ec9bd06476d1a3ac16e0345c20e7e390de2c20cfd41cb86133ee7156113eb8012548c22a8c12a358f7cc6bf11d8a31d8251d07dfdb0082d1b",
    "signer": "0x16BE3cc7Ee03C75AD10a94fb7234B045D351825c",
    "userId": "66529124"
  }
}