{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75351",
    "entityType": "User",
    "nonce": "0xca8e15bbf6a0ea94822fd94e688464e02a6e9a4ab320270bcb302740b31367c5",
    "signature": "0x04dcd9422eaed89961f422ff1dd8b05d95e295fcc492bf734738fb859cddac9a41d2cdd300213aae6bbdc1ca8a98dfbab7fe65e787cd246ff0be689faab486d41b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}