{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0xef1ff1c21ede5e9b77e417d817e20921b106b2cf59f35f754cbe8dde5e477dbd",
    "signature": "0x88a913eb70e27b779e74df8c9cbc91c8df4795b644abfb667d4a1f35ea6d00eb4850e5e9f9877e415b8d62ea9d902c20c7aad1fc4c50a9909cdef2322c30b4311b",
    "signer": "0x60495664C60cF8427e991465f31ABe2F9dC345A5",
    "userId": "696978255"
  }
}