{
  "manageEntity": {
    "action": "Save",
    "entityId": "2076875581",
    "entityType": "Track",
    "nonce": "0x2990f5c02a03d121266924ebf4ebceb09152751f4060773134759eb8fd826e4d",
    "signature": "0x07b4d5b4ec70093aa817facd0e7ad69814462e7b38af0fd9ce9a506229e40ac31269883300fcda231a58d8a4bb30e0e81a54464b09e396756ce2b30057a42b0d1c",
    "signer": "0xb6B208a8f79b1D88d245afa5aDB0a40d38cd6DD1",
    "userId": "528688046"
  }
}