{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x13d566b552250a0c4e51777c83f20f965ab20585c2e5c2efa3e13a6c0ac908d5",
    "signature": "0x8776753ebbb123b4c30f3abae68f98dd34b21e9bc9c95dba19c1fd7acd51ae41001e8be60d8d0a9ed33df6ba6c32568402af6b53ca9a061e8978b2fee39df5651c",
    "signer": "0xE584ca3e3489aa6580E3ed0d245fd330DD0Efc55",
    "userId": "459992757"
  }
}