{
  "manageEntity": {
    "action": "Save",
    "entityId": "2027909137",
    "entityType": "Track",
    "nonce": "0x794fac255623b55cd389142c2d62bb4904c5929cf9e488bee45dc4271c460138",
    "signature": "0x26e0521e396e1e9e056629ce41d3f0d55e550dc558d661db7f394fb002a662080588f201c982d95bb6b92dafa57ed99288d7bfad83618c2b7fed6fe43c893e771b",
    "signer": "0x742Fff9be20F80Ce7285c8Ab12B9018Ef3Cf14F0",
    "userId": "111467392"
  }
}