{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "568518925",
    "entityType": "User",
    "nonce": "0xa0b63a2a4c2a5daac9caae87aa4fc8ca786aeae4ba1e69c5cb1c6fe153faa8ed",
    "signature": "0xecf5f806707ce200c02ab06dd02607c25aab0c1715e0b60938a61182bb6a624119bf825a41b08ca49269db093025ff9c46a31fab02abb1fd2b367443851863e21c",
    "signer": "0xBb3c1781B4353D3876c9351dFBca44dABfb092de",
    "userId": "64843590"
  }
}