{
  "manageEntity": {
    "action": "Save",
    "entityId": "1159513867",
    "entityType": "Track",
    "nonce": "0xf7717f0f32adf92fc1e15534666813d8777a496024b246678d385a53b9f0def3",
    "signature": "0x293231579da510fcd77dd145504cad3b3518c0d49561d514829202d4abccabb3505c9c74db4ea98b410623553bb338da4a601c75f7d13ada196176fc29601d541b",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}