{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x75641f97100c8bd9dfd1f0b9f9044db5233de00d5699c446d5279da534875297",
    "signature": "0xa753ca1d65d6611eaa547fadd0ce428d5358d7b7178838dcfa768d4f9c75ed774d135aabf5fc2e7b8840bbc710fec0c30dc84f48cb2bdac52835074ad61033751c",
    "signer": "0x4592844E37Dfd554b54A3B4B3ab9E150055Ca869",
    "userId": "865894040"
  }
}