{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508547804",
    "entityType": "User",
    "nonce": "0x251c1c0829632928c80474289ba531d33fbbaf1905daee6d2f058262cd1e2037",
    "signature": "0xd1db1d531aea22aa4d23040342497954aed5843a5e3d278137913b3a7d1a200d6f9e2681a0447f0cff04132ebce49ad67087f0d000de4893d4483082ab2690491c",
    "signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
    "userId": "92019297"
  }
}