{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "740883",
    "entityType": "User",
    "nonce": "0x87dd54b9634b0f8280c58a594b5fd2e72eae240e975dbe7e957439adcc7333e7",
    "signature": "0xa2ef012bd586bf9c32411c5fedc8fe656c65ac2715545a20ee86436a8c8d742c43a11c8568f5a77ac439c4fed78715409ce1b38d9632a5cb34c966d145c7e5431c",
    "signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
    "userId": "162770660"
  }
}