{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbbf91884ae55c237e82fa5c1292b2e8b6b32e5637a40ab1bcddf2790fc89625a",
    "signature": "0xb8dcbc5684528600427d2f17df9d0d696185f3aa1bdfaa33f025be34e6c582e86f1610e04b5cba69e582f527f1dbab49647ae711d011b2e915f3f4f46009625d1b",
    "signer": "0x3BCF1f860B3538928156F6F30EA34f741917e098",
    "userId": "476541764"
  }
}