{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x39fd2a3a9d69b4d2961b571f54f2bedb08944412f83c9691bc6da96b70dd3fe7",
    "signature": "0xce795a73b55f8cb1e730bfbb5c3b566de790ced62d901a04985186a4e39cf41d3c81b57f3c228c420b543c63714abb244f0624ada17a9037252e2a3375119ebf1c",
    "signer": "0x75ba1742Db9E72fC29110d15e351Fb811E9a1C92",
    "userId": "776700119"
  }
}