{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2c885db7845a205e25752a87ab934c1e54be7a8a7b42dcf23a7c65a6a4938db6",
    "signature": "0x87566a58c68e63cb58b0057e094d980768ce162828e3d015b46a1f7d2e0c556a7c143f1e3daf279f40086987510cf8f2daef707d08db217bff1be7312627d2a81c",
    "signer": "0x3c7e0391F68f4dbd2Ab29eD5CE34A790a03Ef213",
    "userId": "608859812"
  }
}