{
  "manageEntity": {
    "action": "Update",
    "entityId": "438919473",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4fe1f80522cba546e3c536ae47cb086caf77f0a26150d163e58b5cfdcb5cce22",
    "signature": "0x46b1a01a49b9d45c22202f74daaa653f18c796e6267de6b3cc15bc97d001e72e1448b00730430e6a495df50caccfd76ed498b8f1a66dac7bcc6f37bbb1a66d551c",
    "signer": "0x4237E618b3080aA7531972090a9d132E8415ab4f",
    "userId": "438919473"
  }
}