{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "735980234",
    "entityType": "User",
    "nonce": "0x7779bafec2d50f946cbe580f46e157228f5baeabd37589b4fe8029c4c73804ef",
    "signature": "0xe21d9dd3459d44d34f3b9bb5104731b22ea4308919d5c6c5d64addd673eaf4997908a79fc981f1f629cd63cbc79350281b41507f1c92409f8b75dacdf0fb32171c",
    "signer": "0x1e9F846fdf1a89ba11e2D67fb4831B7E14ae8940",
    "userId": "617992566"
  }
}