{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "75140",
    "entityType": "User",
    "nonce": "0x5111d537d50a0f5761db91cd3b94f4492bc01eaaf645ed1b05860344e5bd231f",
    "signature": "0x459f5b526b04b23dd4081615d17220cfb04a80a077b2263ceac4369024a6b6600cbaf34de8717bfdee6aab7979ebe8234493acf01bceaccd6fe4d152461fec641c",
    "signer": "0x766Ba5816f1Cbcd9649d3b301b8F423CFF252fdb",
    "userId": "758745"
  }
}