{
  "manageEntity": {
    "action": "Update",
    "entityId": "148669782",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x03e7982f724e258e7cf8fc0a66004fb66b0c39b902e76600db964fb642078b9e",
    "signature": "0x62ba8602cb247069d99a76716606a04a89948df9563123f5985b5d6f771064cd182a54fdecd09bef00f560cf83d2ef9f7b1c28df240286c6a07f6f8fe47aa2ee1b",
    "signer": "0x3864F0ab89ebC78F1b2edE5d22B8B038Aa3E9bc5",
    "userId": "148669782"
  }
}