{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301637",
    "entityType": "User",
    "nonce": "0x27ad76d6c8943be257d62f10f571fde8248c5ce96c90c6647858218b3224bc16",
    "signature": "0x46f3f1fb02be2b094a4d0f0e716294e881c1d09daa52b0686fc46df989d87cb10c04c88a6f492a21449c46cf21703525d10bc2103bea84baf9742fcf2240a2861b",
    "signer": "0xA7E9e79581deCe6C725e088554Da8fdf3b1edfAc",
    "userId": "338745876"
  }
}