{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "420647095",
    "entityType": "User",
    "nonce": "0xd6f7ccbedcf1f6ed2aac957636132fc5a5c87fef061f6a999d22b6889182bf45",
    "signature": "0xf18b8e2c33e8901ecb3941c26b2d3aa7768273742d79a5ce98d6ff553ab5dd1e52a2f21493a397192e3ad21faf1c3501222c17e6c32e807fd7e2380de37f85491c",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}