{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10678",
    "entityType": "User",
    "nonce": "0x57a16fbb12e9bdb352e650c1a1c0314d1be96040cabb587f998fc7185a2b9a21",
    "signature": "0xc0eaa81d1943390033a979020ec706e0d9b79a9c5eb921f055848a1561fb0cdc0cd298180a649cd7ed2ec027d86434cf1d9a40735eb797748a48a807140e01391b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}