{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x732a4db63674819030ab8b77cb910e1eb460c99dd573087bfd856c1c2373ee39",
    "signature": "0x566eea52ba60e2d57ae4d901e96f6cab7407b056b44519aa3fa8d2ad44b954863a73d3a472e55a1423d29acddedae2299b4ea9773e1d21b48b710573bae419bd1c",
    "signer": "0x503408571Bd83E422273c0E2285E7Af7D09F63b7",
    "userId": "177025082"
  }
}