{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1438540",
    "entityType": "User",
    "nonce": "0x1f0931f789030ab0b14069c039208f86f2c61d45a4bc425fa77606f77c3fb280",
    "signature": "0x0ee205f603ad366663839b6325d4623380f18a2e4c9510a88f47cc094443fd175eeca686e8271ed01470d98563d514bf8233f071cc8c7621c5eaed70b003b7e51b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}