{
  "manageEntity": {
    "action": "Update",
    "entityId": "370091516",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierahuhwuits4t3c3xuud5mc63hl7s3rdxrrmttilwivqn2fsajycaqq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":487744262}]}}}",
    "nonce": "0x56beb42b46275cfd3033ea379192a9083c308afff45677a9b7bc5a5c6071ba25",
    "signature": "0xa84c111049de355b7f36a570f256fb1de8d4e76a7872d877c2634e54b959de6454a5de06d7aaae9a50e15316bb8e4b6ac1526f0b32a5480e96aefa5f4754d2931c",
    "signer": "0x15B9643abE09bd37C52a5BD1dCF938B05b06cBFB",
    "userId": "370091516"
  }
}