{
  "manageEntity": {
    "action": "Update",
    "entityId": "448151336",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierazii5usgo3hj4nhxpynx2burnamkpvqmlnlamhwd4csxrhfl5lkua\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":2041763848},{\"type\":\"playlist\",\"playlist_id\":225359288},{\"type\":\"playlist\",\"playlist_id\":551420752}]}}}",
    "nonce": "0x600a6f1bc50d17a17e861ec834576db7b998f3de9a2e72b474462bbbcaea293f",
    "signature": "0x10f70452859cf3e4e07deb75fc7b791042d562642727b0dcd79d69beaee017477ec7743d2f800c20b5c9ec84c4617f55dfccb3126283d0c5ad2c58f07d40f4371b",
    "signer": "0xbD7a3e84747148187384D49EED4F6728518e23Bc",
    "userId": "448151336"
  }
}