{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe0556f3773cc23b2e44e1a8d78030b18030baa39865ad7886068fdc23a55b856",
    "signature": "0x6150d2d6a3537e21f2debce4e1b448a8569094a5ff26086b9bed85b396769651222546ba88269f9f1401dbdc0b0838e176d2e416d103d1aa4357f41cc1edbb591c",
    "signer": "0xE0B1Cd7F7124071739f50a64A1Fa3E5EE57a7108",
    "userId": "766053366"
  }
}