{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd0599e2e206f8d1f231a21f10ad2470835642d95791d4212b6615e28578f9f51",
    "signature": "0x6808c38ec8e344b72cdee2d1cba30eef075215975cc78b998784263038673cf524bee46fefbe9363371afeb474e382eb8acefae9db6b61092fa41e2c697f899e1b",
    "signer": "0xde221e39C94364dEa112B68BC6488f0Ce662F693",
    "userId": "38719261"
  }
}