{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "17480",
    "entityType": "User",
    "nonce": "0xbd8c4adbec0860a1248afe1602aabb6f93d1b99c36d87c3ede44d6f5c04dbb4f",
    "signature": "0xb9a9cdb81cdd4039d1a36a12b94001d40b44907ae263c2a74a81a4e7aa3a0b8e38e61d52ead93c4e8353d7027a55db49df14023dbd11c85f5d8bb32b2e236a611b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}