{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x357075181ec97c6f72008ca6d878d47578974bbd92d5df925095849cdd3f4878",
    "signature": "0x3030ea701610cbb46e62a19fdaa3fca9d1d013989b8f8536f36014880b98573350fee6581758412e8c56f2ccb021927b5edf279452c72014bd56f19fd4fc7a8d1c",
    "signer": "0x547F6ee30f5017a6FC51F2559bC5167d6da2F2a5",
    "userId": "423278790"
  }
}