{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3407",
    "entityType": "User",
    "nonce": "0x5f8bce87224a09ba9b16399bc6b5644a736c56645efb938e17236461f78c250c",
    "signature": "0x68e3ba217b277d2d71b049f8bff8f8efa5951a710428f98039803c84629a3bbe2e4a7c6fe73fe859185f3838d858e79bcce64f70a50f376b8577c453fa723f1d1b",
    "signer": "0xdd9866f5231155D8450f557CF6216590fAeE2900",
    "userId": "697765896"
  }
}