{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x87b9946fb052f7057b26f44c374830ab744919bb40b03f58b4d78067e4c049b7",
    "signature": "0x15bd1450a37adc83600048e08b3fce6203ce3f3ba669c254df8b7cdc077df1182e6b09415898366183bea401ed68ec9114256124b5a0834bd8b5a9007a110a431c",
    "signer": "0x6a38b6541bA4485330815Ba5bC1FB5804257B5c5",
    "userId": "695485637"
  }
}