{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "584186978",
    "entityType": "User",
    "nonce": "0x10d00608cb600ecf0f47b58d6455a123b67e018c0111934d93132dd738c6510a",
    "signature": "0x3544cf40ec0ebc87663fd1917c10a494f97d1c8bc3d5212607202f94397f86a31f3ccdcc31c913248c62d35d8855d129fa921f2df34c056035ba9cbd6140e7871b",
    "signer": "0x884490CFa947bC5C5d41834F53666866b78D19d6",
    "userId": "475900419"
  }
}