{
  "manageEntity": {
    "action": "Update",
    "entityId": "612535858",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieralvuuhpdrggap67emgnj6kyqg6chheu5mv2dxypfcgnzqzjsnox2q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":9733393},{\"type\":\"playlist\",\"playlist_id\":833781591},{\"type\":\"playlist\",\"playlist_id\":1852519384}]}}}",
    "nonce": "0x2f286101ec0172da75bbcbd1512a048479594bd4756104f35c65c54081041218",
    "signature": "0x4a8e2ca93705a8623551925e9cc2d0c1f0d00f4351cd4d1b069f8780a4283cfd7b1ad7df9068ed00a24c3f826f589276aabd9d4af7e9fe41e3cc78ad739f596c1c",
    "signer": "0x473ac84E91B21C4fEEa96a0742db8bAeDC7F3A5e",
    "userId": "612535858"
  }
}