{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3c85b0b966bee18bd37842d15d6da443894d4948f04948d91785978d1543d3e0",
    "signature": "0xfaa9898f5419a0cddf5ec7968db1f48a6dd0c3df6598f94ec9b9bbe35c9629d5600593a0f31379cc82961b1f40efa7976b64c36a1f0411ffe02eaf3d121b7cab1b",
    "signer": "0x0748A94f1CD97A564813dD883A13A2faccCfa757",
    "userId": "309295492"
  }
}