{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18937",
    "entityType": "User",
    "nonce": "0x3203bb9c4a97796ce982281107fe6b0d1a31c7d502ac13a0f55c84eaf835b81a",
    "signature": "0xe05cde1151d0529b5947d603ce44373d28a735f32e703cd9667d71bd74740605755645c468995f0875607139065c201e7bfb58f2b0b129a2edac6daf0bc98d5d1c",
    "signer": "0x8b77d47DA28d313A2824468913d2f44F9a5B7b75",
    "userId": "808833626"
  }
}