{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x15d71a5dc7a9efac7ebaa951cec4f39365844d51f61d42ac94d9f2fa5998c61d",
    "signature": "0x04a113b6529150a9d77b4771e0b45323414e3c041fb2f426a7df93794b3a0b902cd795a656652a16cc2652b6ae7a33a99575f34215a80eb6d6a95fca6e97e50f1c",
    "signer": "0x734171922010Bbee19d4cD99975eB2fe71BDd9E4",
    "userId": "218163339"
  }
}