{
  "manageEntity": {
    "action": "Save",
    "entityId": "1160673327",
    "entityType": "Track",
    "nonce": "0x75261dbca3e9189093c3c12763f4e20797bff209c0d78719cd3c9b010fbf3a60",
    "signature": "0xfdb38cd63b69d48b649839b5f4d51b0ab91f22fd82dbe106839125d9b62a4bf3793dd05d2ab48059b65de758546dae5b997edea2710e7d06417d032259c081851c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}