{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306850",
    "entityType": "User",
    "nonce": "0xb8e49a7bc614bd39644660662308de5dafe85de7d79ade9b84e7c53a1a3dec68",
    "signature": "0x4ed080ce712a652a661d1c15f22f2c8f120fffc169ea194bd5fa6369987660635167a939c3df0e8a6c640bc227d1b26f194eb45d64a82efe46a20a9db69da6e91b",
    "signer": "0x087DA11Aa59776EF1A43c6c40382727d45964831",
    "userId": "395079621"
  }
}