{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6300",
    "entityType": "User",
    "nonce": "0xcd59c0ad2c67875359f74928651a310c678fc354ee73941ba4f32e145813b2d5",
    "signature": "0xfeec6846c9bedc4204057c20f56cd68eb622ec710b9d319feebc1fdded14cab674739bb18eaa0e99eb4afbaf18e5ba7ff28837cabb9e5fc1d067f8492b714a541b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}