{
  "manageEntity": {
    "action": "Update",
    "entityId": "275350856",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3f90a0587023243cac2e708c1edeaa5ade9d267c46aa31c4508f05538f27f9d0",
    "signature": "0x008faebff3d8d152ed85ce0408597fa5d5925135ed8f0ef1d5e424c032339b7173afeb15b0a4f45c3d07d433900218da79efbed8af8a59581723c253646c27431c",
    "signer": "0x99cc71DF4121e0a865e7D094866224A204ae2b44",
    "userId": "275350856"
  }
}