{
  "manageEntity": {
    "action": "Save",
    "entityId": "962173",
    "entityType": "Track",
    "nonce": "0x2fd48031606a717401520da747514fa7131ea417e587219e1d97bc433e730c10",
    "signature": "0xd9de88fd33d64767f46b228f768ed5c62bd70441ddf3739c2293e1440d12dd5674e0443ac169e152d2fe17f491cd68816554c52eddbcc602dc457ab4dc080ba41b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}