{
  "manageEntity": {
    "action": "Update",
    "entityId": "683423914",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x179ccebe84c0a3e38a4a7e79f55e0e1cf2ae1e8eace25895d9bb29f82747fad8",
    "signature": "0xe73efee531f8a32018f2658d4ea259e0f42cd9b27e5dfcc5b670e6f75b9708d9654a69abb638a8c441b7d8cacf47b6b0bc49129f07a845fb08fccac2979b72241b",
    "signer": "0x25F540f6f482cC6017beFD91f6A84255ffc502e8",
    "userId": "683423914"
  }
}