{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "654",
    "entityType": "User",
    "nonce": "0x927a5a7d3e119186b7a4323c65db8cc6fa1d472bae485da307e1452b92665f06",
    "signature": "0x18fea12818540a36f7bc49b61a290bda2b36af67a8d670c2a580d816d3f5e3e6193590fba63870f45efab002877fee2c7ed7c5aa4a8f6fe8539df6972cd7d5671b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}