{
  "manageEntity": {
    "action": "Save",
    "entityId": "2070759802",
    "entityType": "Track",
    "nonce": "0x98c6b60263542359492deaccc427b91402b692113f557f358773b6c1cda437fc",
    "signature": "0x02e04833877ccf0631da0d2c147d5f52cab2415255823906ba0aac34f315b381496d23a789552d13b4261348d430d799c708d894d6fa36abb39ff5f90eacfdcb1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}