{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "968368411",
    "entityType": "User",
    "nonce": "0x07e62befb482e5d4e1a5da3e7935a45edf1e2a4d66137a53ee1332f6f6c16eb1",
    "signature": "0xa478005f6840548b55f7bd6e5b6bd840cde1cfc216b5e3e02ac278160544ea0c3e5fe761c73ebd07f02053a13a0f800ff603272f218771baddf8c2879a170e961c",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}