{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7d374935e98804cb5b67d9d77d6cb82eaca0289d3104dccdb35f458a7c48e9d4",
    "signature": "0x704771b1e086287aeb3f886974c962a403eb9b3e9b97f92725efa48657ac2e071a82647aeac953cca44294497e5a6a6cf4edcba5a93b667280c073e526430ba71c",
    "signer": "0xD3c86b45a4A8D532a17db33731dfACCA82b21997",
    "userId": "922367004"
  }
}