{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5616cc8ee1b228cf5f5ac7d8ed989b0e53a07bebc6cb1aec2b12ee4f9e859d66",
    "signature": "0x95aeafc71d11239d2426ba1a041c807694b7145d329ef27fbef16675251a69ee5683cad7c3fab7eeae28764c7ab9e0d38930788af0d3dc7c7dba5099cc84dc1c1c",
    "signer": "0x5138750e347394b36c8C278e2d7bDC3c1cd91fDc",
    "userId": "965634386"
  }
}