{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "900305126",
    "entityType": "User",
    "nonce": "0xfa5ed22608a9e22e5642cd1d922e2ba4e60f8e4d2d6fa2e678c959c421936502",
    "signature": "0x654b73c34c127307bb51f42de9d5467bde21ce05013d41287d216068531283c7090ffcb74d86a6d3724357adb91cb8b8ec9441aacb7ae9b90414b110345383ea1c",
    "signer": "0xbBd5eA31228BfBbDD8CF5C81051073108eC9798F",
    "userId": "94407"
  }
}