{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "699855727",
    "entityType": "User",
    "nonce": "0x2d00f8e4be7b69a882533f20059baefad90dd373cced6d3e9922866a9773054a",
    "signature": "0xd576e1323aecc99561199da292c64e03bb47f77dbf48b395e8a7c01421df7d3237ec732265816033de6907499c78faa1bdd80f9938b070fbb8b990f1a3b4d1771c",
    "signer": "0xC24bF1b9beef42229F5912045FCb2DBccb0C68FA",
    "userId": "129733318"
  }
}