{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1912613",
    "entityType": "User",
    "nonce": "0xd5bcc32075bf33ec968fb13f1823d5ccc46d3f7e3449c4620948ee64814befb8",
    "signature": "0x032f5b6146dbf9f81ddf42e3e8e70cad34ad87b22b319e856f9e4250f540dde6326a1bc49111d28a3d6518cee506a6e10029d26340e1e64fdee251cbad38915a1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}