{
  "manageEntity": {
    "action": "Update",
    "entityId": "672982126",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x16c4504afd7c950077b25745f7ab7876bcb9d9e228c0b33f8e634272a5a5bff9",
    "signature": "0x150a04ecc107953e77cd9b3c98e6ff64528eb878402671232cdbfd181dbe33ee2fddca4e3605a3c053a8a941575b94a10a6735a9aa2449842936ded9afaae5541b",
    "signer": "0x81c8AA76c29E445c135597092DCCEC0873390C95",
    "userId": "672982126"
  }
}