{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "216497",
    "entityType": "User",
    "nonce": "0x6823aee0d67ca5a45e3b38e347efc4a8712226cf8ca2e16a79bc9a0a20af0e30",
    "signature": "0xaa0b57bc4054449f75c8d5b46e4d75508b185de882cd653d22bb70be468244156bc45c8767928875d22552fc11719c78fed4e9dd427c348ad3e0105818ee5bbe1c",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}