{
  "manageEntity": {
    "action": "Save",
    "entityId": "1113608645",
    "entityType": "Track",
    "nonce": "0xfb514c811e66739e523041a529fb03277e2175c969b0c66a514b72b60f9b06f7",
    "signature": "0x65fce63182b51240c5e845d59d50937bf44c199da96a9fc28a2fc5932e71df8b635d0ba4a2d5e054cb0c43756c24b05506dbe9d0b52831d32b2f30e9beca62b31c",
    "signer": "0xC7f1C5c105933bBdAC0c8A3219204f23AD4f3320",
    "userId": "381638009"
  }
}