{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57648",
    "entityType": "User",
    "nonce": "0x2ae7fac7b80388b81d66b5aa854c398793fadec4775da196f054d3436cdaafca",
    "signature": "0x708bcf5716f624397a9930c8d1ca78d57f99d3c01d251aaffae9cf0d0f3a547564ae679b939552d9147a012abbdc69997d94d2ca4743b09e2d7265edaa7ac8901c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}