{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf71d7aa3e76a80c100640fae4ca97bbbb955fae210ec9095642d8730fe37ad29",
    "signature": "0x9b3ca9682b47ce9d7feb84c3df5552b8897630283f0ee60dc5be4846b1489e0704a489d48396c4f7cf17210b352f8c3f62c4503d9367b3a8d7b8589cb747ff541b",
    "signer": "0xAC8b6ff37a7905Be129C642ca5D2ad5AB8a7FD0A",
    "userId": "748754995"
  }
}