{
  "manageEntity": {
    "action": "Save",
    "entityId": "96743209",
    "entityType": "Track",
    "nonce": "0x68d06629852ac4cacc2ede7d114f4b9cbed639aee750abc641f007d1df00a135",
    "signature": "0x76ca007573b90fea029184d298980a021022432459c81c1eed32e1689f10603d069a6e247493b0e18c8360fcb687dcf886121b95292e4542c4a2833f717878c91c",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}