{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "737872723",
    "entityType": "User",
    "nonce": "0x5e19ffef1f5d553809f5110a89bdc075ee76493356f7c19d3fc7ca3d64a50170",
    "signature": "0xebe1a0a9b9308ab14eda87faeff553a1fde3551da4e59251c9846256ffb026c940e946b60b789dfc59c924281a41e7990b254b682bbe1338b048cb0028375f4e1c",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}