{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325172820",
    "entityType": "User",
    "nonce": "0xd9f66aac5aad2a33ad516fbef57f92b544998fbb54c0d79252e9a7d4e2afbf92",
    "signature": "0x38dd762ea1a799f6bc92edc7dea77a0fcd3359cc59794111d0072e37c6b9db844aa665b1905dbeacf49de2097f449f147e2c9ec93f2fec2947572e44233ad0b81c",
    "signer": "0x16D3bf5a80bAfFB2f1550d49b1203D4CA532DA1C",
    "userId": "1994482"
  }
}