{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190351",
    "entityType": "User",
    "nonce": "0xf15e00222444bba702ba56b78fbbb60999962d6a0d54b32c2227797c1530e470",
    "signature": "0x9f18d4e879c21e89ad8201a6cedd26dbd2902f4d5e1bf7911534adff5d626bd435a6c7fad237700615c6845e642947cd80dba706a900f64dfd8fa0694c626b401b",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}