{
  "manageEntity": {
    "action": "Save",
    "entityId": "2029337242",
    "entityType": "Track",
    "nonce": "0xba3f2ddcaf01c784ff19aaa6c5bfc234c6b120870bd6dee3308b9903a2f25795",
    "signature": "0x041db87b7ba8ff98ae34de6dff98de85a794be00b0aa6839e1289f833026a12a183f9b9a0e510bb72d442a083b51a8de2e0eb5805605164fbdc1dc4bbd7460be1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}