{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345811967",
    "entityType": "User",
    "nonce": "0x98b8bdf3b064d6699b69d59f29e301a3a58b77c70a064fd2a4f81dd52ffcb73c",
    "signature": "0x000cfe4ccef60ec4936434ca336f2dc7e04c1d5b429428575512d678d32ad6b44977a0bc359d794ce77f17a9227b2b026b395c798040a798ff28c0cd3ae89bea1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}