{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa3f8762b11a2a123dfe2b8d5e749171818a49fe64f561fdb0e5262882231c6b5",
    "signature": "0x6cb7b66b519fec2e07b5cfab7f324ef7561b8d10720ada808359c4b6a3ae54fa5ad276ec8255f49473217837d2ae36ba0cb47c6fc083cc58fabd13df5c8407791b",
    "signer": "0x219dA21889F2ae8aFb067B6bC9626439bEB48907",
    "userId": "700802422"
  }
}