{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1997734",
    "entityType": "User",
    "nonce": "0xbb827c5a992836a59298815f2092e6fa6810d1d82afe38e12e48f4030407077d",
    "signature": "0x3ec1f97ea377d5f3117d9826b346f44f9a9e71ac13889b4ef6a71c40064248d15d8389037d7f5491171d7e5d65a8e64523df63a1be8f3609b224656f9f9097c01c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}