{
  "manageEntity": {
    "action": "Update",
    "entityId": "572125140",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x14e2102284957d65c5e7adbb3f7de1798f9a40bb455d419e2998c6c3c4316c72",
    "signature": "0x40f152029ae523023247aaf35f15d68078422afcfe404f8f04a7f59d5ab5cb815cd6cb2890bab23273a54bb0d179ba3a2ffade6c7040125db8fd4eb590afe7e71b",
    "signer": "0x1694Fab9C5899cCF9Bd095c5091b101286e574E6",
    "userId": "572125140"
  }
}