{
  "manageEntity": {
    "action": "Save",
    "entityId": "95783676",
    "entityType": "Track",
    "nonce": "0xaaadfb0cf9c49112fbef9cdd32dc8c1cef0f4172c1dbb25161b3a7fc3bba0805",
    "signature": "0xf2c8c02db1dc699aed4be5bc10ef76d409e208da4d7b1abb8f28dc38c45b89cd433eaf0ac267d409592b328189e44fa23eace222bbde57195cfec792c74389931c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}