{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943606732",
    "entityType": "User",
    "nonce": "0x46f19a177ee0ad8a2550f8e6ab8dd0e0fdc914f286ad306bb1efcfa88dccb75c",
    "signature": "0xd2d7ec63c37fc3b40eb2e75d5c9ef8701f0462d27e9ecf1894281fd29f1fd21731903a522098f221d78f1f602d7a22b7ac69790cbbedf0e69cf47718d183e35a1b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}