{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "740883",
    "entityType": "User",
    "nonce": "0x4fcddf16c30a8fcfe65920349ea68d029bf040429c3978f6b3d9a92550ddf483",
    "signature": "0x44e717fdca6120c69737c1f1ed83e9707bfaff8daabfe84417c1a6a0b413c2ed7a2a5f95a3fd6122c1793eb6a1848d388b446bed3ebf8b9bf1042a1a02ac96781b",
    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}