{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "353528",
    "entityType": "User",
    "nonce": "0x1ae4dbc1a0a7c4d2f84d67303bda00f282dc53c4546db36ee5a516376cbd92bb",
    "signature": "0x519b3d4a0107f45bfe8121ed0c4a97cdab7375a25119b105805b9e66b854e0d015b7ec0a8fe5e7dffc8ace40c20073be6b1b70e82471e10d3f0a3444e1cf31dc1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}