{
  "manageEntity": {
    "action": "Update",
    "entityId": "621534741",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera5qi5q642bxmv6fwndhpsmvllq6hazar2cluk5dpdblgekmk576oa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1165258217},{\"type\":\"playlist\",\"playlist_id\":1643016267}]}}}",
    "nonce": "0x057f199553a296a35b520b80c9063027426e012e544004316445f59cb056bb4c",
    "signature": "0x9205b727d3eb69b2a6a3439766cf0fe0f313e9c1d8d5d0967dcaded62f4dc1427168016976ac13e6e05a8dc1852aa336c6f9cec891c4f72b5f8ba05dcc310cb61b",
    "signer": "0x7c9023569D0688566422657303CC9788011C2a7d",
    "userId": "621534741"
  }
}