{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28988",
    "entityType": "User",
    "nonce": "0x8c91f130b2317737b486147f1951a29f3a6b9ae16f3b2b4a609eb130bca2b5ed",
    "signature": "0x9ef21f5e31383d0be7bd96bb9a9d948af66fcd82d461a08efe8690a6fad0b52311a33a2f4bc47771bb30c3c33cb69aee4853745862fb45a1ece46ac2f0dd76321c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}