{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x0440ff01a54e0e660b0d085db9ee45241fb88560dec4bee6303a8831f1226ecc",
    "signature": "0x3b1049cceb61a360dabb1d9b5bc16123889516ca9e9fd8826a062f9eea447a4d004f1461bde5faf7152d941bb815bd38cf5507a52386802d6ce083563672e9241b",
    "signer": "0xe8BAaf9d67869BFe993951C60524b67BC331bac9",
    "userId": "75683930"
  }
}