{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "713649918",
    "entityType": "User",
    "nonce": "0x8859e3cec04cf9c99ff25933daec237bf07deacc44b3e0b80aeeb953fa675dfe",
    "signature": "0x2148d1a305b04c61de107ceb3d2d381a37bf368ac2d11dc4b4f1066bb1d98dc31936d4e9d29f6cc13ab6d3efd2ae960bfd776caeea44feb12c18d38091b2c16c1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}