{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "163660",
    "entityType": "User",
    "nonce": "0x1905d3406500a0e16e7a69b2d02fa19d6b75af646e937680fe36fd02c0dafe31",
    "signature": "0xeb341bf2a1517bc341dfc93336a726cd61d77cdc010ea5c9452a4f61490decd371d5a841c7debcfce540919cc3c6b05761b7fc31112b853e8d4c2fcc4ca01a031b",
    "signer": "0xC57e1cBf8414af8d043075F299b2f13C3DaA1Cbc",
    "userId": "869267771"
  }
}