{
  "manageEntity": {
    "action": "Save",
    "entityId": "1061214301",
    "entityType": "Track",
    "nonce": "1786165049040675939",
    "signature": "0xdbb1592758b02483f0fb30d82ae8080d7137c9421bac1f2a9f524281024cb23f3ae0e6b8b09c618894654c0cd3886eab244e82af4fed85756735c4cbfc620f5e1b",
    "signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
    "userId": "568518925"
  }
}