{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "680426",
    "entityType": "User",
    "nonce": "0xd8f8fa5fcf6a72e1b194f42064f7ac229e2c949dcdde9574ef3a7297831619ce",
    "signature": "0x6913e35c8e50bc18672ef861fa9fb66ec99feffeb63b9ce574eb8c1fadaed05617384401f7b1597b04ea5d1ad3376f0f9a90568ea4fcafe64e7f369880d981701c",
    "signer": "0xCedE64dcD8b0FdEDBdADF4b0ba433797eD6301c9",
    "userId": "638733607"
  }
}