{
  "manageEntity": {
    "action": "Save",
    "entityId": "2027037451",
    "entityType": "Track",
    "nonce": "0xd9ff93171cd9d089e0a53950366d7b79c0e0027637424e57f3fae2641d3f5ca0",
    "signature": "0xc65bc0008322c536abaf189b4ea8379da47e0b03678dcd323b23c8f1a083beb750aca8638107f9c19014376ff79ed559dabeddc6150c28601ee1dea8a313fe0b1c",
    "signer": "0x5A6DCd6E22135e4225594900c17114A7dAD01964",
    "userId": "580576096"
  }
}