{
  "manageEntity": {
    "action": "Save",
    "entityId": "1678657394",
    "entityType": "Track",
    "nonce": "0x4e0d9ca75b0eb4fdccf373c3b63ed7d0c07aeb972a9b25f97992205f0b4bc2c4",
    "signature": "0x0eab16c07e43ec5746d22e70864a5a4c4ecda52bd0155e2d8eb4a9ddd0a52219407691ef632d39040ecf8274d27ea9ef30cd40296cd48b4f09d90a45e0b495991b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}