{
  "manageEntity": {
    "action": "Update",
    "entityId": "403030589",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x25ce76e1c54c146fbd3ab814201cfa99171c406cba0de65d9427e08184793594",
    "signature": "0x7bf85a0dc00076353915afa4528d4e4353bf724d8a1adb828076bcdcc286cd5d484da91f46c87bdd5796a5efcf783d751610c3ef7b1af7eb8bba590967a705eb1b",
    "signer": "0xE988e6Eebc4127285f629AE1492891F39a8a127F",
    "userId": "403030589"
  }
}