{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "55647",
    "entityType": "User",
    "nonce": "0x53d723430fb7d1207744883971b2541c9e6e4b1002c53e16d1db2a8db3ab9532",
    "signature": "0x43c51cf314854ca593cda7a3f91c6b350fb40c7badd475b8c2d8034c6605623d494b4c4be5972eafede56aa8d2dd8c2a4209d66f52d5c337e31d38eb1810ec0f1b",
    "signer": "0xD7Db519a2A03374B0548c02822bE88402aef1E5b",
    "userId": "715241773"
  }
}