{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "254245",
    "entityType": "User",
    "nonce": "0x4d0e48d679610aad6fd60afdf13f855f4ac59dbe1c7fdaa401c5f9f15432b67a",
    "signature": "0x2a437bb1cf4d622dcd5226424ac8c760a50d2e6efc21b9081d9fa296d5c2caaa113ae3d98758bf430903af3a28b13402be1968644f14c42486c5e979471ee2aa1b",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}