{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "101812",
    "entityType": "User",
    "nonce": "0x4b7e9e8236e3459874a7cc498ff623ad3bafdbbe1863ce6d325ddbd4412e05a7",
    "signature": "0x1edd4a6e1a005db1c68f5f9602d1328c1f809bd88d40caf0f58455de466b7ae85950e8621f719747b724b4b00d8db54bfe57fdf1bc4c29d178741f76335f7f181c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}