{
  "manageEntity": {
    "action": "Update",
    "entityId": "970440408",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf777b6929ea77c08a7c6469294bef3f8ff5c0d275485fb290b3d06a46d60dce0",
    "signature": "0xe767840335d8716b3774466b39fa164451c721f4b5e90a5bf6aea277edc49bce25b347ea3afdb21e857f07405b50a4052d8158772a2af3d46681e25ff0435c2c1b",
    "signer": "0x76C3c7e2126f85ed20008B94A2d9686d822EB9A2",
    "userId": "970440408"
  }
}