{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54547",
    "entityType": "User",
    "nonce": "0x20f2acc2455e467e2854d6921aa4a50ca0c6413aee8049d82b0dac124ee361f8",
    "signature": "0xcca7810ad9fddf1beb81738223183ae0d38170ea0fba76ecba9b29594811658a04cc6bfec05d3e3034c1f2a199e0026e0f470aa1a0695a8c039d427fab442fde1c",
    "signer": "0x3C02Dce6AcDC1527c5bB9829a675a743ECbaD62F",
    "userId": "750137068"
  }
}