{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "305386",
    "entityType": "User",
    "nonce": "0x9081be9433b88651137035204b70b9d4bca00223c3cf52506ffe9dc868cd2bc6",
    "signature": "0xff0970af6f355b670ef2ebe8bd4782b8d00617974e451d9b4415b27e86e9dcd844883fafcd7d5f063551fe438b2193a9c938c07be0344b486615bb0dfc3b94c41b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}