{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "737872723",
    "entityType": "User",
    "nonce": "0x437ddf3cf08aa5c8a51d8dbd44f692791dbcc01996158dc42222694083166e6c",
    "signature": "0xcbeb335dc758af7d2ca95d0aa609d01baa626d59be4fc971da2b5c6020ebbc7d113147e7a28d1153c8fcd82ba55eaca368647ce5f91d4cbc9ec0d5c0c6e210c81c",
    "signer": "0x34Cea527C1dc0575a5B686515aad0Bf8F3b5f97E",
    "userId": "13589021"
  }
}