{
  "manageEntity": {
    "action": "Update",
    "entityId": "39933200",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8f186cfdaff75cf21519a18cf23b009ee7b9b3f36d45455ed41d0212f63fbcd0",
    "signature": "0xeb637f126e1b4c97c15160a28218c73693ec86da9c006203a2c582eddbf9bae222aca01ab7cee5cfb62ca6683779de944392969c3bf8d288c5db0133174c01b41c",
    "signer": "0xA9b07396C6621Ef0A65965bD61de72FdBebf6102",
    "userId": "39933200"
  }
}