{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1fcc6e12f455e8cddd38ecc0a656a0c29f9035907561bb935559b33b5047a305",
    "signature": "0xf3ed4523537a2425835b7bc6c7394a7f7ffbca8094e1454c0543b3b08389a36837633498a763a8c0e2f9716698ceb060f49cd87c492d653c6a159f47f37c0b271c",
    "signer": "0xbc7403402F86e2078fE0246fC731AE6Bcf3f6663",
    "userId": "752397146"
  }
}