{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "673328",
    "entityType": "User",
    "nonce": "0x3ffe602dd2a6492a8ce89c9e1474b33a1a50160231feabb552715bd65f1fa0b7",
    "signature": "0xb6f7140c624a98e3eb33b5718ff979bbffd4836311165e1b5a918aa6614ab6ee44fe8e221bc5c7ff9f615fd99a47d758088719d9ab70e46741b4ea82e311e9eb1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}