{
  "manageEntity": {
    "action": "Update",
    "entityId": "493021415",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x21b2fcc5e13fab3c654e976c31c4e3404c5050fd96cd6eb9d0a1d16e7b971395",
    "signature": "0xc435dd7d9ce9ef1b0378833dc23fbbf020aa51ed2cb8d101540289491f270d1c7004250c4728fa7526d2c1a4f71387569b4e2f84919f73a8f3a5aade2ac049421b",
    "signer": "0xcccABc73DB73A41D08578843a90484a32042B17A",
    "userId": "493021415"
  }
}