{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "939113546",
    "entityType": "User",
    "nonce": "0xfffef18deb72545759cccda7b9c8474c653d8195b8b63e6e3e0b715ba80ba6b2",
    "signature": "0x619b5ddc6707ea616cbe71b6b0c4b662d0961d49fedf57c1f4b18901426b085d40bbe84ff41494fc5f94ab8605d12c41aa93ed7605f7d02d37cf2d75964b518d1b",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}