{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "787100055",
    "entityType": "User",
    "nonce": "0x390fbe34efa4b7af27a8b754d4701775fe30b34e722c4bf96469ec0f50ffb697",
    "signature": "0x05cbbea3396f2c594eefc19c8e184dc78c918e6b85d613d04e52c4637c26b3314447ae65db25290553980e80602e7424a43ce89dcdfbde0ed8f67d4aaae6cbb51b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}