{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301606",
    "entityType": "User",
    "nonce": "0x5aad55b120d7123a6c1a98a9dfc70804f4037c98b723c012809f2f1861686ef7",
    "signature": "0x50a5ebed50f9e4feb419fa705c2822b40267010d4d9f24522b5cea6cd71f869b412c8c8735b80b07102846e11899e4946fd561050a65b79f6858462be8ad8ae01c",
    "signer": "0xcc9cCc523005B394381478381D34DddB8558A28f",
    "userId": "957873025"
  }
}