{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "529409199",
    "entityType": "User",
    "nonce": "0xd8cbcbad479666bcd5da29eccb294dc8138eb8758ef478bc9dc52db342192785",
    "signature": "0x88df0863826668c15caa4323e1c682b2a79132f98ef45d90e211a15f27f9ac936a6ea4a31c8d6a06b923a6ec7fb2adb17f4f9280924b6b0589dadb8def257dd51b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}