{
  "manageEntity": {
    "action": "Save",
    "entityId": "1964294743",
    "entityType": "Track",
    "nonce": "0xfe24c52b58b3a903647646f49112a6f48d3ab0c769be89040785349fb389b3d6",
    "signature": "0x334a15d0b4160528e30e87084e16b7b55569de954e4b55d6729883cd02f9f937632ea001b38cbfb9b7bf913660a8cd7f517ff4cf8364e0efca517af6af5378411c",
    "signer": "0x05aba01c97C4F182D989670622abE9c797782dD2",
    "userId": "508263176"
  }
}