{
  "manageEntity": {
    "action": "Save",
    "entityId": "1050010547",
    "entityType": "Track",
    "nonce": "0x6e0f281949bab2436e3cc9da17c9df60db31e1d430ae23894c9c29316cd6f553",
    "signature": "0xc91d955c61b368520b4c0cfe1d6861594431484e527447ba0f9822d22e4df1a700c13f6b39b5e5dc4b4733fd4222150148781f87c9228e732f7d4340c4ee27421c",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}