{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2cd2177e4b82c90de3233c89dc18d61c26d2f1f6678d00e08ceeda5c74d81ef0",
    "signature": "0xe814c4f3db78cc9841f9265567d14a113612ba343bc6891608ab82b32074a48107a58732a4d93067b95547f225b79a2c7a325adc1c78a7f1b20355e6df71e0831b",
    "signer": "0x945Dc75B6211e52bf391DaE8BFA8B510213f5d0e",
    "userId": "138025024"
  }
}