{
  "manageEntity": {
    "action": "Save",
    "entityId": "882518118",
    "entityType": "Track",
    "nonce": "0x3ae9a511b52b92020f77db214de179c7741f95526e3ac4f6b48090cc980dc9cd",
    "signature": "0x283d1868cab36e7e3ceeacf713a4023e048483d729bca0b9e9bd00415d79446c212f173763701742e5027f510833ae722782baebd8e1e7917f61c8b517ec59661c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}