{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "666092734",
    "entityType": "User",
    "nonce": "0x534381ccbf40abb3ca8a164c0f64b1176854c4a19770d858291ed683736b412f",
    "signature": "0x5a908f6cc8e5269da798cecab29803aa6a1829894bacfd7e64e92998cefa17b165ccc6adaa19daea330b924b70d1699b5be5fd68d2062795ebf9ca475eb762041b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}