{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "516843970",
    "entityType": "User",
    "nonce": "0x7462663dce9990824ad6b9b446dcd5af83b73a330b73992bc76e3c65f939f881",
    "signature": "0xee8bb3ee5097c992646c799ecc246471480aea2f15eca8571d86f47e6f94dea57a2d2e786740b0014487f477d3241c92565c1286a87de53a9ce9bd4ce6c66e6f1c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}