{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8d267d683264ba307adb7b1f1f4502c2ebba1e9a31657759add8c1ca812f3f6e",
    "signature": "0x188e976d61c6c1e14f5a410e24ccd818dd7f9f72085b79f51fae456c199e204664cc81718c86525f07c3f039cd6054175fd9a68735ce99412ffcbc71081704f21b",
    "signer": "0x4732EBdBC2A6C0771CE761B9F3BC20465b285920",
    "userId": "454387616"
  }
}