{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfa43361f734b1a79e1ef6e4fbbd21b41df0d13096aab0188ea6f82b9b1c31bb7",
    "signature": "0xfd9908f689e0cba33c0b17113637799ff058b10a7b8e5fa8f1a69de8f5ddcb713a24b58ba9b3f64f37cafa5d46dbcdb3c8bc3fcd4694f4c6e9afe119acdb09281c",
    "signer": "0x67F234AAF68c8574031e10417199f1569b4Ad4b7",
    "userId": "960729840"
  }
}