{
  "manageEntity": {
    "action": "Save",
    "entityId": "134062684",
    "entityType": "Track",
    "nonce": "0xa20d81477602848ec7506185c153edd8eaf9150fbdf7580735173d8c45a3206d",
    "signature": "0x9d2ba2cdd89d361bd96f5385dc6fe6b0edf63ead05bd2ffe1d06d8604d4e6a49385f23a45c1fb52f7ae10c4bf0bb75d5e544a7aacbf70621a853e996e243307f1c",
    "signer": "0x65E206f484415ee5E20E9B8da531F689983C6e36",
    "userId": "718637748"
  }
}