{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "887547386",
    "entityType": "User",
    "nonce": "0x595fa13df895563597014238ac7aa511b0357f4718c2e71139e8c7185da59dc6",
    "signature": "0xbba518842691206905e2307e079eb6a6666710e9f9704c9952c56e61f98b2a420beab52a151bdb39a4dcd7fa55f8d026445eafad5ee4cdeba8398f9cf97299271c",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}