{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "305838",
    "entityType": "User",
    "nonce": "0xc4b1ff97057008a342b0d26fb310f46ff2cc3df2309de706eeab638098c63908",
    "signature": "0x8424b8a623c3f5dd77ce866bb7a582a5e322e42f8bfd48889c0572df51b5aa942a44f3c6fd384f84b6fecebef07902cdd0fe36d3d3936bae132f1b620283b2211b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}