{
  "manageEntity": {
    "action": "Update",
    "entityId": "620856770",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe04c32b0266b40b2bd927eda040650e5e05ed73c9003d5bb2a31721644280745",
    "signature": "0x92ba78ae585629ad70b2caa40a8354d83a86c80ac06d3c7d5340498160ee17a41cb8fb139d569df6ab963c826835184d1e593811f38e7111c7ff4d7b76040d711c",
    "signer": "0x8782c04C315d65be053ab354d5D9D7B980a5C54d",
    "userId": "620856770"
  }
}