{
  "manageEntity": {
    "action": "Update",
    "entityId": "881439571",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xcc2829e18eea2921a737fc4846a447a1252a95e1376268412a53bf017bb4ca41",
    "signature": "0x9bb7a4c972b36839dabb35e64c0deae5ce9099e303d7a71c5cd5a19adf09b7d114b0ce7d1208c3f58fe7bb3dd217cc282868b89fc8ba73a0345bab4c09bc26c01c",
    "signer": "0x6dC6fF5eA5461e5c55F78c88AFd9DF528eaa4Ca7",
    "userId": "881439571"
  }
}