{
  "manageEntity": {
    "action": "Save",
    "entityId": "924900281",
    "entityType": "Track",
    "nonce": "0xb4815a1b8c4c4053d614386a8b12b81f2d933ac53cb96ccebfc71d3290e73134",
    "signature": "0x1eba2a84ae760712461e5095fa60bc2f67e4800338ead078589c65e768fb5bb946a4c2ee51b083ff244f9723f0bc0de59cc51713c388974573a0340f6c613b0c1b",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}