{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "751664",
    "entityType": "User",
    "nonce": "0xa06912b7ee97a5c6589a746152e85b65d855bbbfa27c7b687dd13216236dd595",
    "signature": "0x13d708ca7793165a17c5a21cd027701ad4796e76a78ade10587c4e59f130335f065edb68b7610d1bbe0a7e6e9e43eb6cc6ca77ee047b4f8c240b71698a96d3361b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}