{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x90add6f10bd313cd792310b2967cde2ba325bcb9285c79a74981b17d8d2c9b26",
    "signature": "0x60ea0c627eb07472c6364b1c8e8cfc4187c55e1701ae1eeffd3829dfc98da62048997597b748056cace2a6e56834a455240d497d8ef4c6cda0b3d788fb80cacf1c",
    "signer": "0x728BD13A62A85f3f226AeA8ce09427C384872ddE",
    "userId": "246352466"
  }
}