{
  "manageEntity": {
    "action": "Save",
    "entityId": "2000836341",
    "entityType": "Track",
    "nonce": "0xe9557677ec5852d091231bf2f073a4af6404d00c12ee15aa412c26eddc08aa84",
    "signature": "0x1edc63c88c8d87bec4390bc025066247f743600fa42e76784c0269f8294c84705e7303c4c57c205af518cc20804faa1bdd27145fbf3a2ddfb69142f76c0536c01c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}