{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xebc375fa00a3cca959845f6e3c31182569fbc4f3981142c74e2e943fc61efe95",
    "signature": "0x766517cfc479dfe9cf15330211cf88dca9cb3076b06d2ba0935df82df8de8e8f2d8762d17486e066c34797d7ed24be373a763f01a1830eb3647156f3441453041c",
    "signer": "0x81bAC68D47d9Cf2CC6cd77e5Ec80911be81af23B",
    "userId": "331018771"
  }
}