{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x305444713d8b673967e86e724f19f727f6aea9806d6286f28dcc13b4a9285444",
    "signature": "0x36862d7a7d4da83109916500ebfd23c9a2feb0295096602f45224dbaa82297c067ea81651442955c1033653678ba42c7177a794aa7dc757d57b95766aaeddeea1c",
    "signer": "0xE3d386a379AAE82b5649323eb7B6213C63789855",
    "userId": "104699486"
  }
}