{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5122c04d819bed8dca01fd6f7853e4a968783ed16ebf8a1c242a19ed46f23c7f",
    "signature": "0x0f6b2c11aa2f0b72ea065b7b97919b7305153578e67cecfd25ef646d047837181fa76cebb0e074166ee77e061ed96cf05d6d2d0406e7750b5456f46bd6c59c611b",
    "signer": "0xe083C6657964CDF8edDa4A2141B67047B9816C35",
    "userId": "861832117"
  }
}