{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53419",
    "entityType": "User",
    "nonce": "0x5abb35681a7d07a742137c21f8241e475c0e0ed724622d81c4c3ad64dc5b1f9f",
    "signature": "0x7de314d955a3cd4d2b16ddca193e5f6e42e03893370df789966973c92f984d9f5682c14c131630454a1bd913b7131b09714f92fc3b11355d3730bc048336b7881c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}