{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1511361",
    "entityType": "User",
    "nonce": "0x12ca5f47f11d713207568c19361eb2f87fdd6abf0fd9ac230017e4801ac10536",
    "signature": "0xb1b73413006f42638ce84742505090a0c02906dca81d94f4b3ea73bb5e7e0aa612bd92911e1f5435bbcb79f13b939855065b02c4531cb9cef7fb908d9a21077f1b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}