{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0a85dd0de3174c14d536b81c7d52984bbad1664dc47b189aa330a720a408dfac",
    "signature": "0x3cd55776870656d1a625971c97180eb70c833de33b97f64ecf18f07843cfeb8b3b899bd4c85b3d5f41caf49914b571718b23366d5f087c63c21d1fad7a5fa1d01c",
    "signer": "0xE5B01ffC0f6C8237F3F8e55b3c67A263E1f9a4f5",
    "userId": "498611290"
  }
}