{
  "manageEntity": {
    "action": "Update",
    "entityId": "673773101",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7e4d49f9ee675ec08aaf1fe6549cf4f5eee0b3ad56e07da8e659bae3dda260ca",
    "signature": "0x23fa6ce390453a37aa4aeccbc0bc7d43d7d7bf4c3495138b18213379cd6443c86f995823617c1b9bfc5f98c1c85275120fc047aed3463b3c9334a584ad74b6bd1b",
    "signer": "0x5Bc05b706D3864d34607f61EB1cb128EEf4453b8",
    "userId": "673773101"
  }
}