{
  "manageEntity": {
    "action": "Update",
    "entityId": "559710456",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x9931e5563ef2a7358df8387efa7876aa7b74988416317144283c9fc9e77a6976",
    "signature": "0x90fb5abdb612a9893cec1bb6984ef28415711943d0bc2847f9dccd5ff59d752148123b30a12c2cfb6c09358c1e8cd77e57530ab009119eb57872f32c319d34ca1b",
    "signer": "0x7c5233DE7A8aD918D090BD36cC8C0e6273814D60",
    "userId": "559710456"
  }
}