{
  "manageEntity": {
    "action": "Save",
    "entityId": "229701383",
    "entityType": "Track",
    "nonce": "0x0e4b26223002a69c010a4c988bbd746f2f815765b0f1bc974e7c42391e5929fd",
    "signature": "0x1f2d014cbaf7e5ca7b67436612a075f8c8c6b0670a369d0595da73a699513cdb1320116a0e0dfac7b5f9e12849e7031ab6043cb687e0e9ef4443c2f462595d021b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}