{
  "manageEntity": {
    "action": "Save",
    "entityId": "1417128644",
    "entityType": "Track",
    "nonce": "0xe320e4f67d32c13f1e2af79253fb0c2a3228f4b2832c665d7d06d09add8cda1a",
    "signature": "0x5db50b3230188e8d7a3277c52d13641d4b7c9063fc480678e0ac12ae8f3d9bb93bac7bc4bb877934465f4415441954e7291e77ccba46cfe0d46ff4746f2039711b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}