{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0xaefd353bd87349c96f19b6a43a6a89d309a2d1e15aa1fe31eb813974b72eec43",
    "signature": "0x6543d996ca852bcc9d50a5b96a473a50a537298368a62f34a2ea30bc1d65f88c5af3e13aeb4309d3e6ab35e28f0dbaa239178cc82d701585678ed49eb0d8fd081c",
    "signer": "0xDb47e2B5c66c0d0378ce851af2B2a9b3c7A196e9",
    "userId": "583102341"
  }
}