{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4ce84b4743dd532e24562e3c8db38f45503f8f0f512cdd6528c39243e6663734",
    "signature": "0x4c5ae373276c8c325b8198ff7ee7fbb433b7cd46c3ef3acc3bf12c6280f216a1558afbb8425ee03c3cebfb2926e2163d147cfcb625a1df03c829b17c5b8b68c11b",
    "signer": "0x7B499405130cFEFBBaec9980A9E37BBE42E8589D",
    "userId": "633494619"
  }
}