{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "311829956",
    "entityType": "User",
    "nonce": "0xb0c9bc7ff16971a8edea5e12c3dd564a3327c767ab88a6c67d7b1a1c4fddd822",
    "signature": "0xe4ff7e63640ddab1baffecd6da44080104ad41b9adac13e1d7b4f86d965819134e7e9fa8a0135a55719bc829a051ec7d55a6e27ec530795aeee7acdff2bf96531c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}