{
  "manageEntity": {
    "action": "Update",
    "entityId": "536358467",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4904854b0e09a55b296435cd8a43c18ef67e47f42b75635c81ee469fc5686640",
    "signature": "0x5b4e6c7ef7f6c0ffd4543f82d581b799b7569f1f2b937a134de1503523b2c482593c1919fe2ee24ff1ec2abefdc7f771b88d72c6fa44805d4ab29f3d22b2d6321c",
    "signer": "0xfd7b89EdB6CF9d00f8D0934e76030556f2167494",
    "userId": "536358467"
  }
}