{
  "manageEntity": {
    "action": "Save",
    "entityId": "797238",
    "entityType": "Track",
    "nonce": "0x9af9350ee65fe89dae9f4fd354fe0c9d692944cb4710e69add80ab3f9187b1d3",
    "signature": "0xcbe62aec7606a86ad7c98f1a1447ece61f85db958eadd9a26297eda2c0b779a55696e34f22cf165db587669ee8fd7309d421c4c5ab35b5cd37d9130d586deceb1c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}