{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0xbf24fe477d6b0aa039eda1de003b255e9ba8e6aaf393243826d906f304d30fe2",
    "signature": "0xddc85e4279bf756fa9effe83fd447241005286288bf84af1306fe9dba7ec6d387d580301e5ffca9532020d95732bae3df629bccf6601deeb9b06444d04548fa51b",
    "signer": "0xf4e39f23021D832A7D8e37A3e280Bb0E5bC75bFC",
    "userId": "406892069"
  }
}