{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x63ae326d04593cf41b27dacd22d6e3c1039968dc3206c16d601791fea881ab80",
    "signature": "0xccfdccbe97b0816d66c281799f9841c7edf88c3b0d6d857a2c9c885e7ca45eba2bd2b633b3b04a7dbc1d3bcbdbf4e9f3184624235309e4046475aa94593773011c",
    "signer": "0xb8909c41963586dbBe3EbbAB4FC8F1f8E6970Ce2",
    "userId": "435332232"
  }
}