{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7cec8a794df9b9d387e30b328fa51fdf904846cce4f31201dba41068497ab660",
    "signature": "0xfc78fea24f38781be2f8e5809c1d36142abf57339a0fa029637765718cbbeff642dc1bb8edf3b503c98b653d8046eb89d7ab52454ef909b7efd1f3c935098f931c",
    "signer": "0xb72D37Ebf634757b65Ca8e601e3Ac59f98f1fc4F",
    "userId": "478992451"
  }
}