{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x65c6502984bd6f392e91032a1076795d921907dec8e9eccce5f9bc8c66505200",
    "signature": "0xc52896fa2881530d941de0b8778edd93248fc0eae40610e4716a3e395c8d2a3550a1b20791339f7a610ccaf3e57af78fb15db3ef2cd19e5d8852356b0a659e181b",
    "signer": "0xC22be1cD27F5E530fad003EcF38Eb32a38187947",
    "userId": "671651901"
  }
}