{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6a8ddde5908b19dd30f3267fd7ac9d225492098834693ce6ab4c8e1742862e07",
    "signature": "0x0368d69f7152e9c46dd07f8e5393e1dff79293d98382b5a607d9057c1568cdb429c3d9ea480c9505d730bbbb5f532fe59d3276c6040b6c800f3dffaa30d1c7701b",
    "signer": "0xEc42239F54dd91CCb96d7B79762C8d48bcE31b4f",
    "userId": "322226641"
  }
}