{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1438540",
    "entityType": "User",
    "nonce": "0x83b01fe41ffb9b679bc6ac93579accf901152f9fd582867f77496526bf79b62e",
    "signature": "0x131ac80799e9972f697088dac16790db210d367819a67db069654b56273ce906101bb5c3406bf239ee33eb1cc73f2df7bbc68c485f1dea9e785f81f1d0f2e7b41b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}