{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9c4b90c2750d13cc2a1539787b964c73819ec1099d669a6175d1f6311f144195",
    "signature": "0xc300e522949507561eec60ded628d9c7ba3d5734173b2cb42b169650b08a1ba708c73997b763e448c97c732f1908c68627c08455342b74a3305fc617e6b9c02c1c",
    "signer": "0xd4F92C7f3bb9b8e0a2631aCf9797D524aB90dd20",
    "userId": "691001250"
  }
}