{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "754583",
    "entityType": "User",
    "nonce": "0xcb9793e7e9e154c2122442ba249ce8f3f7a363b5d5358d257351ada99c57568c",
    "signature": "0x1d2ff9376a349c028719d2d19bdd8dd5b4dc9138388db27f10aae9df79a58d541b5a590cffbfb3f817111652d0e1483114812a146c3865b0a14cf7b3423855ba1b",
    "signer": "0x4988b089A1548793ce59CCEdcD3C4Ff26f93ea8d",
    "userId": "826162910"
  }
}