{
  "manageEntity": {
    "action": "Save",
    "entityId": "130829739",
    "entityType": "Track",
    "nonce": "0xa1f89e0f8488a76448f94f71a483f30e010f9c9df06f83b577af9c08a1b04482",
    "signature": "0xbde1fd2c62f3ae83a9e804e6e7d0d35f5fd5114e61dad856872b866985f07b244cc7856739307840d7dbc5d36803175d6bc7c4d923737cc36e0b75bf80a79b9f1b",
    "signer": "0xBe0B2B2beC4B0A46ff11169512DF7f66E775c0B3",
    "userId": "196632465"
  }
}