{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb939980a0a0846ff9bd67ae50dd395585dc7b0de889b421321d231b5b33e1e25",
    "signature": "0xffe23fd44f550ea9e777076edca0c8ce2abf7171c02ffed7241cb37dbc324b883451d266542ffe083d7bfd9febdd68435135af8c36a799c805b5af428afa1f4d1c",
    "signer": "0x3dDBeAd91820586505dAC3132608EDcdaCc58265",
    "userId": "144128494"
  }
}