{
  "manageEntity": {
    "action": "Update",
    "entityId": "680517375",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x74702fdfd1406ac490dbe2547229903e10a4c0e862669d09266d6956ee2f2cbc",
    "signature": "0x130351056bfdeb18ba1087f03809841b39ef17b7e14e42b960dd1c00f129e539756135501dc3c83296bd42586e313b1e37c4203c916e436e9c2926a294ab7a541c",
    "signer": "0x5Da8B4553216Faedf54f0B756f3d3BA7F6781A2a",
    "userId": "680517375"
  }
}