{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "385410",
    "entityType": "User",
    "nonce": "0x645e224fe0d15b7a52932a3910c4ff73b732036094e462c6d705947a7b242910",
    "signature": "0x39d321a5e172e220bfd06b079905ef97b60faa1a60870ed303abbc990df96b804ddeee114dd7c354c8ddc9f2defcb3d95a51d28f4f11a7f5bb00cc3bcb12bf0c1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}