{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "756513",
    "entityType": "User",
    "nonce": "0xe1bec4e87c5b0860607b0cca94f25c642e31b447d86eaea1815b7877901ca0ec",
    "signature": "0x22168d5511e0656592b1dbc067bd5d6df983ced1084627467c0287bb4a90811413955755ba7a3e03aa523d6461aefafe082ba81270787f2574861c9f1ed73e581c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}