{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0254c5601adfa06ea31a34d4b57bc20366579761c9632e0e93fd0c5ce6672af7",
    "signature": "0x8249f2680f65712a6f066930841959330d3d54140113945657363cdb6869dafd0c70f6ec8295e4870fb3946479752129c754de0467fa42e260ffb5ddadce90fb1b",
    "signer": "0x641C4F359Cc69812c2fb696CFa36445688Cd1D35",
    "userId": "395775499"
  }
}