{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "683609933",
    "entityType": "User",
    "nonce": "0x2e6e90fad0433cc869a136b4e6ecadf9289389aad76a3bc292fd5517494d15c1",
    "signature": "0xfbb2c08a178fbfea0644af9e09750eeca923dc7b51dbcbea98fe467ddba350f454c8158d37c57b8f37273e6f7dd00387bdc22fe1ad20b815b340cd428568de221b",
    "signer": "0xc4A500E17D812B285447720CCcb7F8eB148c91bd",
    "userId": "256479919"
  }
}