{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdd87120633276f62c41c1cd7c7ba25f14ac63562b3aaa406f954f2e00a823262",
    "signature": "0x32695fa33c2708edf7635344501dd12291f2e916cbc07f87f7c7743b9d4f40cc0df37deb54bde647d0c3a589b61753f8eb60f9440c3ff522bd8a330dfed1b4c51b",
    "signer": "0xA164D2ec8Bf0178BD99653ae7F8593f846CbDa6e",
    "userId": "66485498"
  }
}