{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "294",
    "entityType": "User",
    "nonce": "0x3b764f5996278f211823b466e8618a6aac83e84cc34bd5947281c6880d5018b0",
    "signature": "0x615d2e98e74d468f5c8c98943c07ac5a752543e17c84edb16363b0d629aeb99c7b0ca14ceee43bc3608e7dacd29249755f1b9b63a5bf61e5e1a152605621e0761c",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}