{
  "manageEntity": {
    "action": "Save",
    "entityId": "413152277",
    "entityType": "Track",
    "nonce": "0xe9d63ebdc1b422088e1a205c2bc952cbc1fe55a205c1a58512e50ffc6240beae",
    "signature": "0x23e0f82a1d12c0a6d78591ebc8cf356aee2d9cd0be1f153eeacd633bf2be304e4571ef597ad710a572f9cb87bb2acb9aa84bc4787b7f58d1a50817e8755464fc1c",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}