{
  "manageEntity": {
    "action": "Update",
    "entityId": "950992991",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera4vcwl5lc5xifp4rk6uixhgaxzgww7mliniejz2bgogjzj7jkntyq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1024203607},{\"type\":\"playlist\",\"playlist_id\":523346712},{\"type\":\"playlist\",\"playlist_id\":684415304},{\"type\":\"playlist\",\"playlist_id\":1246485514}]}}}",
    "nonce": "0x51e948999228aaabe4141036a4823e890233baea25d42309822080a3d7a238c5",
    "signature": "0xf491d9e62910b705be252d55e9ca9915323adb76f0584295a2fd736e219be180013c15b1a41794a15256ad740f744c851b24625acb9c861e54b2a47e243be1cb1c",
    "signer": "0x108C4f72bF3Bf631dC1BeF51D0F23FD900AC3761",
    "userId": "950992991"
  }
}