{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc6eb5b26d03240a440f0b742adeedd879df26af38b96d757d1656a2c838ef429",
    "signature": "0xd057ba2f12fa663b062ad8cf06e6d0e0553fa7e111ee67a7a81ab1188a46631235bbe384ed8d4d6cb4fe0fde6c77a0f0d07bf19f6b7a2b0c789c944ddf5440931b",
    "signer": "0x4a901ba864C2F225E78126f6877a9646e2096b90",
    "userId": "725778874"
  }
}