{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x47281d5f8c58f583be0d6709e6ced677ac6848014ffd9e8469d12410c101b4fe",
    "signature": "0x3853c7c5a86c66955ccc2f5f45d1b168d4bbbdc32069a85ee0a361b638a5cb93332c31d99111abeb1f3e784e5a2c7f34328eb07b063514632d7222124578003d1b",
    "signer": "0x30eF7Aad3d46C55a6cC16401B3c73d76ba29FF09",
    "userId": "471930786"
  }
}