{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1446748",
    "entityType": "User",
    "nonce": "0x42dba7553c822becbe6d6d217a607482fa484fedd07c6d8ca181a63757f9c494",
    "signature": "0x52340ab5e091136abe8147d094cd64f7916b0c450ae5987e08763ecbafd117dc62b9a8624cb9f2e2a4ed5e107e821700df66414dfb19a0a45e5ace3acca7371d1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}