{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x42b22867ec45ffdf1a7842bba5687ad87c3805e4ef34e487b2056ec156fad531",
    "signature": "0xb304bc4a4e319e58e25adffb99826242f16e595cc0bbe20559e6b4a4e194e1054aed6a67866b898889e53fbe959c12329b419b0b50d790715d4617bcabf104d91c",
    "signer": "0x7aCAd8ae8aB7d3c6E4d0E4b004769e352C567dd9",
    "userId": "641237722"
  }
}