{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348321",
    "entityType": "User",
    "nonce": "0x9e234eb42b25cb4c629ae7d09973ac38ba45a657d707041cf6e07929ba74d667",
    "signature": "0x35f56b0ccdf30f79db78f04f97b8dcff11b61041687016a3ef5046bc14a5efdb363a16537ac7dc40059694820146e20572ecbb8ce01e54571cfc934a751155bf1b",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}