{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa803d886c8370f6caef2ec55cb4099632ddc02d131a729d7a0c70cf5c025d68e",
    "signature": "0xd80afbddf14f9305fb1ddd882909c9efae85964934acef7bde524acefdffcca717a0f29ca2970c88f0c2578e13bbf7f9c1e65c6efa4fd37df5530468579e78571b",
    "signer": "0x9912C777325cc0C43bAaeC5670F65ba2c5a2b597",
    "userId": "477794851"
  }
}