{
  "manageEntity": {
    "action": "Update",
    "entityId": "630392492",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x42456352305fff3de1b0d305c38b1449b8c89258cebc1e62f130a95cba0d3d63",
    "signature": "0xa604390cf190b02a7a937b153fd3afb29c741ced3c3b1f577d6ca4e504ac0b7548eb90195d9335ce57c010479d1976d874ab3867d1c207eb0b4047b2cb274d741c",
    "signer": "0x7187121202662Df9cA95764a23676Fc193636F53",
    "userId": "630392492"
  }
}