{
  "manageEntity": {
    "action": "Update",
    "entityId": "488512993",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x583a317477ed0ca8f6a6a593c71caec0ea2400ae0da0c42c932b0a905389994b",
    "signature": "0x36497fb63b72220348a4bc8f04b1588932c08e09e412f3f3cfa6e4de693437184baf4ef142217b2555750083e49af4d4a6ae20878d3eae5d093129652d4c757b1c",
    "signer": "0x2361Adb264793F6Ed58b761996BF96F4B0C26a1f",
    "userId": "488512993"
  }
}