{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9c0c8c4233b2bd971a337126438838166b69feecb7955551941981858478316b",
    "signature": "0xf3ae7686f0093699bb9ef36658508e8151561b66f60b48d444753b387796548505f3df6fed6a4bc6007b2a6c9108ec6209c00b903221af66cfd503641b45a9e11b",
    "signer": "0xDF9352d1988F7140ad4167745251E23Fdb425be4",
    "userId": "323789212"
  }
}