{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x43f18c12534a1e492815f4c1fc8191430d4fe13e7078a49c083198c067a33899",
    "signature": "0x44a205caf2d2c1cde0b42a475e62993f1f470b23108d69503a4ae613ecf7d70818b71bcf645472f79e3efefc7eb7e74849e0efdfcce0827d7d3cdc3ed87538d91b",
    "signer": "0xC97d203423b67B22659429FC165c5eFF9b344d22",
    "userId": "522101053"
  }
}