{
  "manageEntity": {
    "action": "Save",
    "entityId": "2061072144",
    "entityType": "Track",
    "nonce": "0xc53b253174b3a9e15d9d1dd54366a0e8cab7ddde25324ba2869789f042e1db6d",
    "signature": "0x56b2848d9f23ba44e1d621b9676bafbbe5823e138105d6b36d1a7f396679faf8361e773f3f6c95a93a397be259f021c57c293f8331b4b79a226dece73a47a0a41c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}