{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1416399",
    "entityType": "User",
    "nonce": "0x9566861264db24ef87d687554eb1b0cfb81fefca0cf6e2269db814cf51725dbe",
    "signature": "0xe3da3bf742aa5571cd9ab4886ea26edf792d150ba1263282d442cf3b7aa584e055007580975709574d141c234d572a07521d0c3fd5f92d36641cbb2e9c8e18541b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}