{
  "manageEntity": {
    "action": "Save",
    "entityId": "1005886",
    "entityType": "Track",
    "nonce": "0xa40bcab53424cfb69291684858c8623cb8e17b2a8319da8352367515160af093",
    "signature": "0xe443a6e125a0a5f0accdcbea09b40e66892efa3832a9274a1e355a0aafac99bd0af4d01c6493db625722e62714deaf17ba4ad765659035731e3ab85716956abf1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}