{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "768479471",
    "entityType": "User",
    "nonce": "0x671d9b9a81d4a1e95b68331c433ce5a4159435b49e6a1231fd78169c1dc0a890",
    "signature": "0x70038fb70e037a28b5c5578766929840b381dd2a8940b10c3b5f0e205d8254e43157e899348436abdd0fd83683969f5d4e6b27828288afafc745cd9483fe0dd01b",
    "signer": "0x9461A9b4Cc94c89F432302D00E129a7bF62D2a16",
    "userId": "744301658"
  }
}