{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0xe533c82063bcbfb52eb4fa3d1772ac5d9e47e3efcef4e655ce7a4724333592ea",
    "signature": "0xcfed28e620b1add203ee99bc3c0b7bf354b566981e3396fb56544955cf56af3078b8692d661711b5ad30327022affd7abf5b2f6b8dee46902a44cc06170773001c",
    "signer": "0xF116a8635024B33644DF0CC03eE326bAE67773b3",
    "userId": "569557247"
  }
}