{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "373987581",
    "entityType": "User",
    "nonce": "0x1f058d76fe8426e43a58669d09d61775ae86d8030cf57dad58a91fd330184ba7",
    "signature": "0xeab616258392ffd3643ea65e3b61b86083555a5f4d066c2816c8e0a633e169c73e6489555079d6e3bf4a7a68f19eeddc2c8820c4ea8259641a3f077fbaf357be1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}