{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0xc6c12932c2c35498f79d9b74bd5e82151a55ca86d3ffdad91f9355b112abf59a",
    "signature": "0x0a88bd352a87661ddf1cd4c7d43ac3f6bf6a13ceee4fd6add0ba49749f14d944497872e7e142d2a397c2154aa0f4bdc824540bb959bd3c3036b80e95c03ebe751c",
    "signer": "0xaddfe8a42a112B9e07190590DCa78C32CB396871",
    "userId": "380767039"
  }
}