{
  "manageEntity": {
    "action": "Save",
    "entityId": "79081972",
    "entityType": "Track",
    "nonce": "0x63d5634e85f52a5fbb70f799c34ac911e91f49e866b8d7d4f66b5b54f69161f1",
    "signature": "0xc667337449039585954c39dced85de2fc4c4210bf5d3b42cbd74d7d3bdf2a6b569cc2dd1ed91317cf9445c2ea34acc7a299834a077aa95213761213f497674ad1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}