{
  "manageEntity": {
    "action": "Update",
    "entityId": "678598071",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1b87551d36f3d90787438c2a97ef55ce411db6a5fc9bba3b6e54fee82f8a14ee",
    "signature": "0xc3c3aa687c72034c3ac85dc563657c0e5f6edfc9578654eea239b37bf82136ef412bae42ca17f70060c5f618ec18429a763deb34005567c548db234df6db8f9b1b",
    "signer": "0x0b5154bA4A70cE61CC119fa2cc8f7e52c84586b0",
    "userId": "678598071"
  }
}