{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50067",
    "entityType": "User",
    "nonce": "0x2881e9843412ba8ec1681191be37030b424d66c24aaa54f9e04a9b0fb54b41c4",
    "signature": "0x65164ed16df0d6975ca2ae8fe6bbd7b6a1849240cf98981fb89554735c1c97d93739f904594e6567d123edfb689fa14945c05120b55a1b9e601a70f5aa83a56a1b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}