{
  "manageEntity": {
    "action": "Save",
    "entityId": "459122",
    "entityType": "Track",
    "nonce": "0xdcae18f205d44095c633f10440db69a52a8e3281b7b763f38eb2d9b1b5f5823c",
    "signature": "0xf00c67be7632a0cb535bb5af3379ffd983fdbb4b76e7e40719639256bc0e3d31522b2520757f27e405b34c8586ac6c9e34e71bbaef65e5bca969b645929387371b",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}