{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3a327d70de0259663a751fe5d3dd4694f2ab11a9117f5173050d235504292f88",
    "signature": "0x727f65143d442506dbcefed3917bee96403d5b3babfe46c8cda8e80d2ad994fa1c7dfe908bb2fc99f65e622164066c3d8b796ab6aed248deb825ec30e74be07c1c",
    "signer": "0x2c53863503f8F734Fe44b2cCd02B493f8d284d00",
    "userId": "133059980"
  }
}