{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xea1d34e2a2cfe2fc774f59082b4f9a1a4c3b826db52b46f9382e5f712e771fab",
    "signature": "0xee356563f3ae8bb897d72c844e9f7d7fcf7eeecad9ea8baca3b4db42c92b11986f85d89abf1361bc4cdbfa11fbf310188d721d6fff15f1ac4b41caa01d48e4bd1b",
    "signer": "0x3D404150df166aF4b6f7F3707820C34799C06190",
    "userId": "794658727"
  }
}