{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2eac650ff825ed0d337a17121a6e551997e4745027a5e6b6ed82f1ee5cac60b8",
    "signature": "0x6e00f22e80a8fcdbdd230b4d4ea1249d6436532e50fd863e30d5acf5daaa97d538af1dea29481469148b359bcbf1e22722fb307178eb16ff646e10ff7dae40411c",
    "signer": "0x1152ec8727A87a59035c477aBE836F5C801764FB",
    "userId": "724467448"
  }
}