{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xae19e02d426b5d927738285cefaefe66ee3e5ad8ef74b284f4cd736361609b2a",
    "signature": "0x4e1d29d51154bb80533d5c312dea0eaf6d5aedd5f235ef72bfaa01484dcc54b907c983d3d5f2eff8d074673bf40e9d975bf2b4004f53829fa0f1eedbefbab9f21c",
    "signer": "0xAaC8C964109EDE80328C73e47E438AaCD5023900",
    "userId": "448670186"
  }
}