{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "253697507",
    "entityType": "User",
    "nonce": "0xfa900747bea8637b55f75168cc5cb2316058e235c6b7461e587ead94aae4ae21",
    "signature": "0xb1faf8e4b7ab6edd46715cdc2c9259e82e93f8a34e9cd865b50e7ddff8e5a1217e17afdaeae0105586e042a279d62d7abb38141f8628ab0f1670cba81f493c9f1b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}