{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "638733607",
    "entityType": "User",
    "nonce": "0xfd6b5dc6a861dbe2868880560195df2575bb5050c1b42c87060870f841a59e3b",
    "signature": "0x4eb1a9bdc25c19ebc0833fd21b27045a5d52c6bb18d7807822abdab3b33bf817128fa0669b966316ca79f3fb4006877ac91a11c1b4fdacd07c5e54723a5aac951c",
    "signer": "0x7bF90aDB0D4f329e1dA9BB5123768023eD007adf",
    "userId": "111728084"
  }
}