{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "624603604",
    "entityType": "User",
    "nonce": "0xf86f43422e594ac35ddb6d5960a8e7303d46acaad266ba8e116a93735277db5f",
    "signature": "0xf795198fc6a63051ad81541e3bedf5536f2dbcc842a2d087af0ffa823985c35c50d41ee991fb8a99254689280349534ec4fdd62aa07a68347a46f8098d13258c1b",
    "signer": "0x9FF2A7F5Fab732dA57359bb3eD63a95511bD1329",
    "userId": "67863854"
  }
}