{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51978829",
    "entityType": "User",
    "nonce": "0x9c4e4fb3a79ed75ae2ba426db68b0d44d9f3b56ab989b8f9391e9075136be7e5",
    "signature": "0x5f39381293ae13bb1cdea30e30e2562b2591a45f453e78fddee3301905d2465f394e504f2ac6969d46a16929cba0deb66a93603aa324cba674448868eaa24a831c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}