{
  "manageEntity": {
    "action": "Save",
    "entityId": "1699912152",
    "entityType": "Track",
    "nonce": "0x9d49fb4e3cb5ebc6301ea62e58420208a740dd531dcfe2158877b0c7a12aaaaa",
    "signature": "0xfe3254422b3acbb232641353b107dd95d307a05d387acd859145090b2106042c7f220406e677779bfe8e5e1143ed76db81dc1324dc6000e649bec861fc4e0fd41b",
    "signer": "0xD967b68365738013c9197659aAb46EB73a488080",
    "userId": "488430169"
  }
}