{
  "manageEntity": {
    "action": "Save",
    "entityId": "1116804",
    "entityType": "Track",
    "nonce": "0x2e296a5516aad2437ad97aecf3df9ea9a0ff5f4963b500724889aeae6e895622",
    "signature": "0x15d7d229d26fc5a829795bfff20975cdc075bb68dbcf455aa6d6ef3efdbffdfe150756bf0503ec0e2fba66ce32842ca1a54988e3cd8536a0b8125c426137e2da1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}