{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0a147760063d49e4632ccdc297ee8bb972201bf77d89f56b84fca3d87d1cae31",
    "signature": "0x8d71b18f447e8d89707b35ad751f1a99b6069ceb27f1f06098011a4f99541d531084ee73247522d50dd8cd3ad98b42e88f7c9fd2bc43df7f9b6287e4a7f5f3461b",
    "signer": "0x07d3e7EaDb158540A049c457f0057e9f13aaB3c2",
    "userId": "935480784"
  }
}