{
  "manageEntity": {
    "action": "Save",
    "entityId": "1732666564",
    "entityType": "Track",
    "nonce": "0x0679734624e63d1018b57253e76ad9954daa44a6ae93fead2207aa379e64451a",
    "signature": "0xeb9d94283850885aa48e3e93072724978ad68cc2ba3abbd119e01d1ca4acd2a8793afa9c011faa102b43fd419e8131336b235be40af84b93c443219831be610f1c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}