{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf13bc52dd73d3a1a5448e74cf660a914cb529216ce201372e81cb7cbf1864dc8",
    "signature": "0xf926e2e739d015d27baa81d3a5c853397edb78fca2868142886d5d53d35622fc134ae18cc7f8070c88a41b418be93c598783b2208925bada6d34370c0c96aab41c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}