{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306102391",
    "entityType": "User",
    "nonce": "0x3572c29f8fb726177915dba3748008fa2dd7c7a494766775ed0d77523c252b5f",
    "signature": "0xc26233642f097e0c88be2a72310f5110169b30f240c2313baa5e7f60a65286102928a767fe9b447591230e5377332e1e91619feef500a3e0a4aed0fc8bdd49401b",
    "signer": "0x87FC3581f96D45b347BB39E15f25079950C5Cc27",
    "userId": "339826419"
  }
}