{
  "manageEntity": {
    "action": "Update",
    "entityId": "778497586",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5b401091666c8ccb336030e43437f8fda2879ef7751c569034df024a45cc385e",
    "signature": "0xb1fab8ced53a62116996a844cf22d0f50b408245557ca973ac89e1fcd29291d77678d88e1ebfc1cbc75968beb4f9613309ce64c62e893aac8254d796c36267d91c",
    "signer": "0xD92291016Cb24dea8D4808BCE6Baedab5df54720",
    "userId": "778497586"
  }
}