{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x36f42192536e844fdd0fdc83f33e770cedd6e4a0a33eab2319ca2c5802c79d68",
    "signature": "0x59807b7581eaa7fd159ccca3ad45649b13b509cec58e9e514eb3803a8fe9e79c56733444ba24dd6dbe52bbabb7b5289e1248f3cb5f6d7782d1cfd59ceb1680221b",
    "signer": "0xE68B644418C49102f3baFE7007482B0DB0df6F74",
    "userId": "749228874"
  }
}