{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1212434",
    "entityType": "User",
    "nonce": "0x150a5cafee52faca015a66f3e799da5bce1c842029bad1c1ec9566544b101803",
    "signature": "0x2a90c2ee7f88fbf8a868ab7e206b4c6fadfb3dac2db5d90d530f8a763af8c4b70c0deb1af24ccbdd33590070f1c5c910197d847000a7e8f5479c08183ce96cb01b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}