{
  "manageEntity": {
    "action": "Save",
    "entityId": "925073735",
    "entityType": "Track",
    "nonce": "0xd4d76ecc6d8d1c0141347043a3f6b120faac6621bd62d22c1ccbe601a8da9edc",
    "signature": "0x95accf0689097c8ba5022fa8b82eed92b92f132c91798991462bed8ab3b836136b62a8b9c638bae0b5a88089e977d5c5cf9f5a58176b7d38229a6053ccc219e31b",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}