{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "128415",
    "entityType": "User",
    "nonce": "0x945964e46e9f9d09d9b23c3406af93e8ebc5eb8ddd15a9f20167bf5b36de65c0",
    "signature": "0x8f9df9556b99504747981dd68d21ae3cafe7b46f5688a1c43dd3e4695c14d44735afc7766afb41994cc0f2e24b64778d8bd9455a9092e81107540c272d0a36071b",
    "signer": "0x80005E1c5cb88Fd03a994eC8a06eFD4c801102D7",
    "userId": "225974748"
  }
}