{
  "manageEntity": {
    "action": "Save",
    "entityId": "1724137249",
    "entityType": "Track",
    "nonce": "0xa5dbf276967de06584ac5a14bf5d3d3b5d1637864a7d50334d66afda4cccebd4",
    "signature": "0x9a07a7f82b05e2c15eda4aec84a51df054871dae61fc30ba9d09d137afbf56cf7d2e4f3847f745ab0293da4eb20da20dc87136c6118731090f5c1f1e13f3d8701c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}