{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "619242476",
    "entityType": "User",
    "nonce": "0x68fd9acb2d9c5f9907bc22113568f95da9b35ba6626261944cc093e184f9e688",
    "signature": "0x40f6e7c46c3c2295698b6a5d2be4c686410e014369cd6283658ea2b6eac581bc021f19e5cd66e5b440ffa894247bc797a76244060f25b6d2c136c443329fbec81c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}