{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9a711862508726116e079cfff14a18af8f1f7b24c95c6cdda3cb2c9eebf51c31",
    "signature": "0xb0431436c745de8775af1d0dfab821de99f12bc42e668633ccde027077e49aa15eac2f162dc6e0ea67ef2a3df7af0f2535de3cbca303ac106221df5d669c17881b",
    "signer": "0xa06748efD06D1E98798Fa744020c4Bb2021799EA",
    "userId": "907820696"
  }
}