{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa8e6b4ac3173e3c48399b661323f617b39b9c6c322d195032d5497ea7ab865ce",
    "signature": "0x3171ef16c4e1ac5850dc5f2f9ee04c752c8dacffcf0e15cd31ec07cd159da68459cb8c0f6554b83bde21b20301c7edff21063e5c83944bc925cd8ebbdb7064271c",
    "signer": "0x0787f23963feA309FF6D58fCEB3aecb7Cc2785fa",
    "userId": "519102244"
  }
}