{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4756",
    "entityType": "User",
    "nonce": "0x7b0dc340e01eeef5e01579b98497efe05f2b4c2c7253c3ea2c40d40447d1d778",
    "signature": "0x87fcea39d02c054838810614a19fdf78d6742e89a4c2f4e9c57b11904357d5101c845111192ae73eeaefd446e7ca42e91072c6860d8fb8c85fc6634513172f181c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}