{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121547",
    "entityType": "User",
    "nonce": "0x4a6606c4dfd0dde1e9f21c2a10d4902926838619d4ff98810b38714cf28a2ca8",
    "signature": "0x9241a2d063cef9834d39604306a3cd0c1459d573326865cc6a8a600301c5d6d52d069ed243a7e9b7489bd43afd78dc09b423cb5b5e12afbdc980296fb7aa54af1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}