{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "137166",
    "entityType": "User",
    "nonce": "0x41b7e8b75baacbce43cfded50a68f9b9c52751a80f122515be472080083de540",
    "signature": "0xd0a6359bef9c550cef72e37ed8817e26f4db5de6caa84b37eaed6491a8a6f1861403b8ca42d477ada19f80fbfd5ec25f285bddc7c3bc19ee10b3c4f503d786b91b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}