{
  "manageEntity": {
    "action": "Update",
    "entityId": "630392492",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb3a1035af388bb53dc6518cb6c5a66966b081742bd7c203f57dd21d39f5299d5",
    "signature": "0x0a53b45ad3000c7382915b47c1cabde5c3c515c009de8771e4c22a92110bf47a2b2cb7703c968566b20339ef3e7c4343d7149cd34ecf180cec5ee47ab520ad3a1b",
    "signer": "0x7187121202662Df9cA95764a23676Fc193636F53",
    "userId": "630392492"
  }
}