{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "281612",
    "entityType": "User",
    "nonce": "0x1c2cbb27a5a23267becef4ce2c8070fc0d155592192059da00a4cc84a7f7480c",
    "signature": "0xb9a929de4a937e292f105c0e7c30aa4e0b2fcdd37ce9c8c667f02ba36e5b66b177a622796ee2a5cfc75e0bf6ca853aed52f741e725fdfac8da2c1f863ac027431b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}