{
  "manageEntity": {
    "action": "Update",
    "entityId": "520129762",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x11d31fb62bb25a52dba409fb9578bb57ff02e4ef41ecb64832f4ad5d6600c4b4",
    "signature": "0xad5a36acbff4aae48981310f5ea73a5278281ad2979ab61df8b22999a16906796144cbbcce3cb00bf317e3d6f7ebecec24827ef750bf5c239ea9e36ec7b3f83a1b",
    "signer": "0xA5984A059A1733149DA81bEc73492e94f57e1F9C",
    "userId": "520129762"
  }
}