{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "781543844",
    "entityType": "User",
    "nonce": "0x806857207fa3b1139396a8d2554de62ea423e878e1bf6e6ed3ad77712832e469",
    "signature": "0x99cfbfbd5e1f6314f3abcbe051885de8ec710ddb5b33183836db2da964e8073328222e2d4c967cd9d97dcbf48da9b80d8c11babaea9a0b0fa3e6a9db273b950d1c",
    "signer": "0xb7C7a8D9d12EBd1Cd438cB065E97280E6D7e912A",
    "userId": "984691913"
  }
}