{
  "manageEntity": {
    "action": "Update",
    "entityId": "422383007",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf452abf45d4b8230bf78a572c8d976206b1bf24c660377293d79fec85977b2f1",
    "signature": "0x2713a9fbfa180090e4df756b7b52b717f654a50edf64e90433431f75a29a5c002ac601df64b72ca0c52bc7badf2102dbe216ac1ad332fb63b2eb07f8d67e2a091b",
    "signer": "0x4466e1a64e35Dbca375F17dc03485C9C5c71F49c",
    "userId": "422383007"
  }
}