{
  "manageEntity": {
    "action": "Update",
    "entityId": "43754840",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierajxgmmiist2eqb25ukwrzanpycgfxhuy5ehsqtmuj5v2whxpnfksa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":286830119},{\"type\":\"playlist\",\"playlist_id\":257689016},{\"type\":\"playlist\",\"playlist_id\":192146528}]}}}",
    "nonce": "0xf66005146a0c3787830fa999d27a8bcb85bd4498bc8785c6e8449a80c1470770",
    "signature": "0xe823ff4a994c7d5cb27fb2c11e887abbb45016e161e7cbc5ae653ca4e175f6b9177dbb3fcf0051b0505f4b43c393d13c20edd8edc2897052fe3de9ec4a1e14761c",
    "signer": "0x6409f2D99228Fee0405Ccf5572802befaCd890f2",
    "userId": "43754840"
  }
}