{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1450501",
    "entityType": "User",
    "nonce": "0x61db6e56458d4da09c6230f02a111972f3977882768096c9cb3bd5a6f35682f3",
    "signature": "0x69b7121f44c753da86bf5cc0920df896183168f14fe16c7686ff124288a8bf11167871ddf4a1f400a9ee2d6fef5321190a6a58e9d439d1b70f842cc9085a522d1c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}