{
  "manageEntity": {
    "action": "Save",
    "entityId": "353746368",
    "entityType": "Track",
    "nonce": "0x575abb9d52cf4ebe9e5818bdc3fe8d044313b19961a88f9b8a5757b31f335d66",
    "signature": "0x4b6526a8f025b5c72a1642b590b04c4df48642ce8ca2facdadadf969f4f994b7241f2f73e2889226fd833f1835cd19f23161dd22edac4b7ce743b32737d995b11b",
    "signer": "0xAD107a7f1cB5918cCa4fa4556Db5395B94A41710",
    "userId": "928659794"
  }
}