{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190942",
    "entityType": "User",
    "nonce": "0x5123e38d05dc3529c99f00d0b6161b38eea81352eeeb6d2351acd9861f40361f",
    "signature": "0x434592b897a737c4cbe31c03d79ba10a7d4fd12d97cb6816b57d9c1fec693d5421adfbd01b3f10117b8af6d261ed7240c45e5b3f7bb328cba1acb5cbb97a75bb1c",
    "signer": "0x8A6d37Be1a08F1aaFB0BCc6ef8bea16935e6B39F",
    "userId": "687066725"
  }
}