{
  "manageEntity": {
    "action": "Update",
    "entityId": "509819410",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x73a1f4aaea80a5c2417e172204f58ad3de3306c94febfb58ae437179471e56cd",
    "signature": "0x3850c7596f5db86f9a8310ec0d427cb554e43afbc9bf9ebbf979882fcbcfd9cd770f43828cecf6fda8edae4bae1e29fb8f1942294fb41baa0408ce27a548bea21c",
    "signer": "0x792632D35Fca4cc5abA0bc6B33a3F6729b4ACf3D",
    "userId": "509819410"
  }
}