{
  "manageEntity": {
    "action": "Update",
    "entityId": "649099946",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x276b2d26270273d6925b53438b7b0815ed1e493a8883bd6f78b4c92e112c1ed3",
    "signature": "0x7fd4097f04ce3adaf36f5adbdd66d40031225933dad47a1fea69c5ceccdfaee940d40f2292fe6302a4a813aac5150160382a05790c3f6456aadeb1551b40d1251c",
    "signer": "0xA5E9de07041a020F8aCC648d53FC5286b51E9C9B",
    "userId": "649099946"
  }
}