{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2bcd85b857162b93915212f04d8f17881c0ce4bec83c6f94a2317264869bb848",
    "signature": "0xb7ac7615b3f25e15f18f6239c38b79190c5faaf639d61a039dd8afac6ae4ad5654ba1678e3221912c27dee39395e448ff6968b16549e6d6ac769503f886d9de91c",
    "signer": "0x5968d7FD20b3da74b6eaA11CFf1F802b63C1cc15",
    "userId": "518873206"
  }
}