{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "212453",
    "entityType": "User",
    "nonce": "0xcaafe69d37ab21833d33f4cac18d589a967230b4d16f90bcf87f691c0cf9e049",
    "signature": "0xdf6b352ffd8048d365bcb34dc121f32a36e58b1aebeeabf3218d785e2f21e4da3b12a1c74d08224127bf7ce9158c185b3c93c3627d2366e364639c16b09553f91c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}