{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "143424",
    "entityType": "User",
    "nonce": "0x8b778fab8d02bc1a0068c34970e47940891aaf30cd51d2745c2daddda8833f91",
    "signature": "0x099a31327c620ce1d7f9c8ebdc7c430990667f89f8cca527dc992b56b66089d778c5a19d9373f07cafc99ddd2ccf6affe07e2013878ba2fa3ac36eac65a53e741b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}