{
  "manageEntity": {
    "action": "Update",
    "entityId": "450159398",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7074713af2a400415887911077bd6f63b367caf3f7de96c6678966ac6c6b3c7d",
    "signature": "0x0d33a14418d7f7727d3b1790525168b24061a3eb709412d77f3ba119e19adf32303d6f0a349706f903b0c588362cc7a4e09eae3cb395a66addf6917fd4520c081c",
    "signer": "0x22923a5E5b0Cb133B9D8D9FE628cC5BbCD434508",
    "userId": "450159398"
  }
}