{
  "manageEntity": {
    "action": "Save",
    "entityId": "1250110366",
    "entityType": "Track",
    "nonce": "0x31a35c141e01da13fc2242795b0c9f3561ccacce93feded3ecd9d6bd49149cc0",
    "signature": "0xc60b7f6c967d15e331a2302928bf416a4139ceb93d2d3534f1b208aacab2f2e434c19637dc1089ae4322ae10179545ab2919ff57fe504ca3dd19f89c073e5ca81b",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}