{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12615893",
    "entityType": "User",
    "nonce": "0x57a57833b0e001cbab1fb4ed4597d91b7ea97b01dfe01fdfcdc2bd3afd46aef3",
    "signature": "0x6e2563a4526004a85556f075335b3f8c46bd9179ac16fec13c695fe64cbc6589045ac76ef007c5f6a3a76cf1e7d9412cd248335a54e6200ed52b962eba52ead21c",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}