{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "71507",
    "entityType": "User",
    "nonce": "0x7a041a2fcd11ad34b9de39fb0cf94353993048abbcb492847c976ce4b93d79ef",
    "signature": "0x53a21bd359c85677dc6920423e1295ea66f64ac7febe69bef89e9928b9407fce0614641ee9ed4b06ccccba0fbb43c562dbffb58dd30d376cfc776b5119346ac61c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}