{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1337dfd898dd7fcda0f63ec080520469430102f799f28e323eae58852d07b231",
    "signature": "0x6202e4be3cf9c0edc6ee258ca209314e2061d431a1c349a6e043c583a5243bab5b6d510edd428c1ae4cda189c22083c237fdc1574126509b58cbf80092e6bae41b",
    "signer": "0x4913e43ec5763cF02DE847524AA887130A8B1d95",
    "userId": "216182698"
  }
}