{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2194",
    "entityType": "User",
    "nonce": "0x9f00d65dbda876662f245b33f2848f4cf8f8557661db1de9e7d97dd5b5e9e193",
    "signature": "0x616993d061a64c839834bf8e44302f80cf5550d69e89935ef4591c38a83655354d476d0479c6bec828d8f80bbf8ead58cc804f4280e677bea9088f7e8b2e12e61b",
    "signer": "0x1472Fec023A32bFDB4d9d8dD1C920b2DD601638F",
    "userId": "452206810"
  }
}