{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "520958130",
    "entityType": "User",
    "nonce": "0x47eb21bff93ed49909d1391bd5f3387c824d83e044820375cd4970a8c9cbc4fe",
    "signature": "0x054afac4b2885a6ebc6a8e2dcee86f95a8e8417b2a0cff011f1e56656a4de3e81e58892b1358918655e0e132f0328231c7a72839e34e45bb543565edb3952a7b1c",
    "signer": "0x4D1242D0da3f49195E59794290Cbfd833cCD04FF",
    "userId": "627952347"
  }
}