{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xeee7fcfb9279e0595ac848015a4a9d8fd2ed170449af2ea2a0c5d05752ff374a",
    "signature": "0x76d0721cddec4ce4d0dfa73caa370abb513720a0bbbf6382190d340cc5060c315e41f944a3a614602f21f3f573454e7ed749c8979cb7fc92e25b24bd8622f3fb1b",
    "signer": "0xDEd338e0970215D9A3E4F3053F0acC43d7074faA",
    "userId": "973098013"
  }
}