{
  "manageEntity": {
    "action": "Save",
    "entityId": "1710662499",
    "entityType": "Track",
    "nonce": "0x38a4598d1a27a360a2a2bcd9c0d53204ca9c9bca637e3702a36ab2dc1ca832b5",
    "signature": "0x99e565d47cf769e0d6688ce26530f55c398aba7a93d6eb20cfc61ff8b987b55f1a7f2595a8bfe74febab8306ef6f6a61b14376aafb98f8ac8bd0ee75cddf64291b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}