{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdc7e72b2ba77056acce6437d08b0170ad19b8bf86aecdfbd731f9780217569d9",
    "signature": "0x809bcc4ee81d7f398a7595d03ecabd558125e706b668be94980f4afc1dd819d736b505e2bd51afafad8e3c15a5bdb7246800f77226d1686cdb2530e6deec5a5c1b",
    "signer": "0xC016cb425E30382D5EE0FC1A4dD9A977f836a2c1",
    "userId": "291544059"
  }
}