{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "745901100",
    "entityType": "User",
    "nonce": "0xf89eb3ac13d2b1ff0a4c43abe471f0626bb9397e2e3e6e63c26d1fc5edfe9b5d",
    "signature": "0xbdba7b83419f4f7aaf843ec6bd0232fec1e63b47bcc543f0ee0e911445c8001715ef95c5dfb641ca1f50638a682fe5fafce291d5c68a5322b532795a582f5f441c",
    "signer": "0x2CD314789C9583D12b6F54862F9E2cf505880Ad9",
    "userId": "354640"
  }
}