{
  "manageEntity": {
    "action": "Save",
    "entityId": "1210033479",
    "entityType": "Track",
    "nonce": "0x5f2bb4fa0d90441015877cf2ca7fff1e3143a9c3d396afc3749f8fca254f49fb",
    "signature": "0x0cf22bdf633f8c76e3d713c5d9532935afbd5f05232b69ca9ac3f8ff8955a4b152c88d7ac9330a24496b889917dd4943d3edec2eba9a820dcda30ba67282a3de1b",
    "signer": "0x730D61884359389d8aA22afeF2b83FF4F7c9ee63",
    "userId": "342017819"
  }
}