{
  "manageEntity": {
    "action": "Save",
    "entityId": "1283583595",
    "entityType": "Track",
    "nonce": "0xcb07e51fbe948cd4b4ef7118b7888c0a7653cf0f2137a135dc1728b607990b72",
    "signature": "0x12828769317128076e26b599952a037a43d283f3ca548be4c5b0521aac2a9c932279e69718d3a826908a1b0e1019b33f89b311c278891deeecdd7fa8e5a419171c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}