{
  "manageEntity": {
    "action": "Save",
    "entityId": "420242627",
    "entityType": "Track",
    "nonce": "0x762301e6cfbafb631ca5aa2e69dfcf788585084f426213cc402af7ebf126ac5d",
    "signature": "0x9630f8c2e55dfd243dd6d75d6ea5fcc9ce5ac660adccf1b418cac3dce86ca8742a470ef39bf85352cbc447b907d01699a58866823ae318d2619d1c709675740d1c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}