{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "243927361",
    "entityType": "User",
    "nonce": "0x81bedc20ccf839bbf7924247a97562916a1ba781b97ae621ce58d79bb0b23583",
    "signature": "0xf92fe61e4d6d899e40f8e400d1cdc1d437d0134c1ca13751ed7ee1ba7259ac37293ac6cd88ccd6c8b203bbe272d6970b5a5fb78b323753bc16fe3c827f89818c1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}