{
  "manageEntity": {
    "action": "Save",
    "entityId": "326160950",
    "entityType": "Track",
    "nonce": "0x3c492a38147d2cba783b0b127418e0f8674e0731916e07a247b9ff6936f8e9ba",
    "signature": "0x1174fe60267f974033a853084f0d0fb10725d176d1432f3d4cae290024bc4c7237401e7d079f76f56493ac3b343b10487d22f7e34b7d8b25171526ab89af434d1c",
    "signer": "0xF08935327AeC6306C8d0eb92999567e5496848C9",
    "userId": "989073793"
  }
}