{
  "manageEntity": {
    "action": "Update",
    "entityId": "561451396",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x917632be0ed73759ce229e3dbd9dd4d5c785df769d091ad37bf4754807ff79e9",
    "signature": "0xf90072df3d3add5b7e72f265707357d07d46c76de3c13d056f48331182d7f37607124753571af2374f0cf632a29b9bcd5bb36a194c6e192720293311097212e21c",
    "signer": "0xE7A6e709348adEe468e979369F4f97b246A04302",
    "userId": "561451396"
  }
}