{
  "manageEntity": {
    "action": "Save",
    "entityId": "1325130440",
    "entityType": "Track",
    "nonce": "0x7a12b99523aac3afccb1c95b0cf1be329e5d88bd801f6fe0d4cdf1e01e92d73a",
    "signature": "0x9bb5afde4589862ea2f3252050f52e34e611758edd27a4f35a3958de2ded90d94cac49e6e0dff3112eaed1515f469d6f6e89419ac45c0925d260fe094b15baed1c",
    "signer": "0x26Feee0AaDc0e2d8f7aBEd5cdb0bCD7D325F618d",
    "userId": "354535"
  }
}