{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1748ad869b80ba82339a6dab91fe57535908fcd36cd838f0e8671373f0feee81",
    "signature": "0xcbe75f86d401f7ad481ba00ae639233243d59c2ebfd065506d84eb2dc22fa5d04ff02e46344b9a87302edd10d6a7dfc6ff808954f9edf65ff001c71da1fbe78f1b",
    "signer": "0x643a7D01c8D4d435f9263d6dE2d6C2C3352e70ed",
    "userId": "305151012"
  }
}