{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xff9579e2ddb0310d1ce7f6be01a7bbe3f9fa52cd7efc526c3fb0d92fe98c5a39",
    "signature": "0x971e303327d1939e451f07c95256505947c65f8207db3cdf39f5a8930d17133550bdccf5c7ff53f06bef1ca721695154d4ade970cc43e9bd62f5e580a0cdad871b",
    "signer": "0xEF645db3505402bb23edEfe2C059199A7782Ba9D",
    "userId": "392916852"
  }
}