{
  "manageEntity": {
    "action": "Save",
    "entityId": "1870843360",
    "entityType": "Track",
    "nonce": "0x086c5272c27f3e758f8f2732298bf3e933ca0b9ce9459adf4f1a2c45c8c219e7",
    "signature": "0x31826160b155c095aeb719173afdca42361626fe103aa714ee4375e7781cf16d27a7e30f61b9216b15508ed5a080efb8c39eb9e50e15c7575f3c68059e909a491b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}