{
  "manageEntity": {
    "action": "Save",
    "entityId": "998962",
    "entityType": "Track",
    "nonce": "0xfa2795148f89bd0626b4f22a7bddc5cf2fe7b896ac0b01407f52750e07551ad8",
    "signature": "0xa83204fb7a57dbb171ff3ca37ef002cb8d3b54d99907e585a122447da3af9dfc2f2b1ea5060729416ef8a88ea6d285bdbfe6564a6a6e2324ae41dcdd440c9d911c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}