{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "30491",
    "entityType": "User",
    "nonce": "0x17a3dbefa04049aae9853ac8ad60db24ee5d0cb5bcab12f330609d1bb844a213",
    "signature": "0x898aaeb73975d115e76e41f3c0c3bfc8a2adea3d68859356ad986016b14c94a93cbae06c1b3d20ad6316d84d94ca9183b323377678de3cce66d3014fed2717f91b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}