{
  "manageEntity": {
    "action": "Save",
    "entityId": "1853077006",
    "entityType": "Track",
    "nonce": "0xf8fa20cc09c1a9ee72af64ec72485fc4cb527b6f31753fdba2274237da6c81b5",
    "signature": "0x93e03f7dd22d7173e881aad269e025c8917524577d4c1461573cb55d3a2ec1d5467fd0ddca86ce5267aa1c1d645aac688f564400321da5b5b110c3e5fa64119d1c",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}