{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "837777538",
    "entityType": "User",
    "nonce": "0xc60346003473900617a81db30b5770cbfc727b69592bc86f691c147b4a22d711",
    "signature": "0xe895cb9e7ba55470078ffd16ab39f9ec3c09b7b53b183b07948c48cb7e49568f629b0b065596960e925fa7eeb75ddce5ab6d0b173284f2f7b128d667070460821c",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}