{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "397473",
    "entityType": "User",
    "nonce": "0x419c6fecd5bde9965eb40886a21192aa390353a2cdacb09280e33f98764a4cea",
    "signature": "0x3644533662a19230821c8312828156bb42877b7a352bbbd884fada59a33d9f6e54fa584d3744d4658b5d638b8150bf8f4364595523a1fbedf3cb7938f1f68be21b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}