{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x336431b35ef4a387930a8f982102892cb34cddb66c269e3d62e8ea42a9474903",
    "signature": "0x8e3ea864bd16085325b4a33b3367b87f4dbfd1e3d071d573ce8d2ddde014d3126891424b9326aea08d3018d333b8b92292120fa718593b0a5e5efb0aaf5464d11b",
    "signer": "0xab604472E36489FeA0d602ce211Bd1213C33D751",
    "userId": "369892127"
  }
}