{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "674981811",
    "entityType": "User",
    "nonce": "0x8f96e968bee9262130c2d451ef11f5d0ddbe0687ea69ba121a5aaf0926cbd673",
    "signature": "0x9b4cfd9b2ed78b49777ba7417bda1c092f6654971fee912fb9f314f787b1a7da2c17999a3f620b2d1c77061029758929350758020cdab14811d922fea83143c31b",
    "signer": "0xb6B208a8f79b1D88d245afa5aDB0a40d38cd6DD1",
    "userId": "528688046"
  }
}