{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "139146722",
    "entityType": "User",
    "nonce": "0x71483ee9d827b02c4d64a0d7332f2c189ba3ef98d30357bebd9bd083d84889d0",
    "signature": "0x923b638163568721c52456bb816e7edb75e529ec8878e81282c0bc3c4b6185a94e1dcda6f55ff7b572a85aa85a36191fa2f047b97b4b450abd6e9bbb6d7bc6dd1c",
    "signer": "0x292eF57C1FAAc86008ab58D5116e0ba424C9189b",
    "userId": "721084704"
  }
}