{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "536962",
    "entityType": "User",
    "nonce": "0xe5efd6d0867e0c865784be5bb63c9d038d3becb3dd5f8d8ce8cde047148feddb",
    "signature": "0x6a9c7f7e59ae85890deb01ca5caffdd71e52a234b1327ed3eead44697fc6b5f17f824bb4dc5adcb7e0dad552d6c97c9e47d83dae5e0ff2055a286e1cba6f9f031c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}