{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "751664",
    "entityType": "User",
    "nonce": "0x5dedec53ac92887665321b8b4a300dcec9679870990371a77bdbed9f8253e2d7",
    "signature": "0x664023d00db5150d33d51be0f6f2eb3c10cb7950c5ea492adee216d1123e152115d87d8c95bd76e472b104d87984841e4d8e5039bb7774381209640da843d7fb1b",
    "signer": "0xCd69C2Cb50a21531a08Db7A8333c51532ea010f0",
    "userId": "837274016"
  }
}