{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9306f6e85a93fc6be3b0a8159dcc22b4b65d3937c9c38c85a16d6a98db14bf5b",
    "signature": "0x376f349a3eb1c62a69a9150f9774e8e281bf649db5cf1adcb9c58bb85a015c173a487c8809581131dbb1ae47c6bd84ea965f7d86e0893cdf7044ca16fbd55eef1b",
    "signer": "0x7be720f21FA36366e2b1a4d872d5237FA9f7999d",
    "userId": "778958725"
  }
}