{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "845727327",
    "entityType": "User",
    "nonce": "0xc5398cd95254fb1584134abbf05e832ea840fb4ce014f0660e440479eb93219e",
    "signature": "0x8e2bf5e5f00392c5ca632b4d3a3f513468449191e94534d27ee2d27ebf97da155f993a94bda86f4591e2af278f240f90fbfa3400e761295fdd6bc0730aad31941b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}