{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "753447",
    "entityType": "User",
    "nonce": "0x252e6e6c9956669303cc05621dcb3957648d22fddbb055708024db14f88cc214",
    "signature": "0x8b5b0f71aade855583d90a21a0e0c164b2bd933a671433bcaa4da2c196607e6460daf806dda1814160f51529cf964f93c69bee68a7a9bbac57f46716f0cc21a71b",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}