{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "555663956",
    "entityType": "User",
    "nonce": "0x646500280f79a7a3e1d6e7dc0b3f550fa83767af3e5a26cee1d713db2b179dbf",
    "signature": "0x777b30107645798a0eb01f457fe2031cd8370e568bc6f8b64d2fcee2d902392d394a80709421df509cb4e4a7f43c0ac79d60536a6dd275f7a3c25aede89d696e1c",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}