{
  "manageEntity": {
    "action": "Save",
    "entityId": "1601797093",
    "entityType": "Track",
    "nonce": "0x12da8495345f494a6a170ebdb36b7036ecc3600c3a09110c45735b54ae595d76",
    "signature": "0xe3a557929c21279816be69f6419a3849ce06488e236a08c48ec7e30e2286058b67abefba33267b2deeeb59d13211899f8df1629de84f45d961d54bacd1d5cd6f1b",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}