{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd9619fc1b1063d1e9a2a8522b6f6551cc562310f82131f88476c4ed65c12f075",
    "signature": "0x3a9ddf37c69c7544f198d402f3087fa4d54c2f3d5e7b14b83af3b4fe6f9fb82c03ce3b6320b9a0241eb61dd377344620328897fc094a35576ad108f0a02875721b",
    "signer": "0x642A2CC27eA0DBf2FDaE8Ac3786C9877e2e40347",
    "userId": "540999298"
  }
}