{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x719dcc4fc71b5a75cb72458f874dd7cb939489151addbdc15e7a82bad8e8274e",
    "signature": "0xda3005dd1ce519071d8cff37f89f716cd836dfe43ef750fc0a64e07ba716c849286c7bce76a3f9a57e3da86fdace52d9cff40c38c60540c93baeccaa9a63ae4b1b",
    "signer": "0x365da29AC7e660316a7FAdfE169ba31A00CF66a3",
    "userId": "199592872"
  }
}