{
  "manageEntity": {
    "action": "Save",
    "entityId": "2000337125",
    "entityType": "Track",
    "nonce": "0x531e47f7a1195a55f61b126b2c0278727df54dedf074d6723ccf4c9894b9dcd0",
    "signature": "0x6e0579f33adabe292238f650e10d1e7f8ea56800ed95b8474c5cf29cf7b5f5c065f32a7018c4fef92c39f53524e07fdc08230705a03def419ff1965d50b1acc01b",
    "signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
    "userId": "92019297"
  }
}