{
  "manageEntity": {
    "action": "Update",
    "entityId": "523649423",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x13bc6cccda250e33deca7a459443a2e1a1e1853ec466b3a49f56efd1f3c3be49",
    "signature": "0xd80ace19570c95913138df7b9154855e3fd942f66178ba6ffe65f261c4e9ed6b38ec0f2a577b916ad41fccf849645aa7054ec5be40e92d5373542ca59fed0ce01b",
    "signer": "0xC0d6317CCf5316e4d6325f07BCC2674333170751",
    "userId": "523649423"
  }
}