{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5712e0f08e11b18de4a64fdc6115e1575e20e0ab4a1ea6968bbfc3d8869d21e7",
    "signature": "0xbd3d40dd9733cff2e7b20dfd40cd91da884e8837fc2c8c41bce206e650eeb3fc314dc0d427588782c895aabeffffe3577fa5ca9c704ae2fce0cd9ff158595d8a1c",
    "signer": "0x959FD51Ead810737Cacc5f4E62CedE5307F9BF61",
    "userId": "495160577"
  }
}