{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x58ccec877e8255a7e9e2ca4fe4a61e6f9918838aaa4dcdd6ad5b4ec276be3095",
    "signature": "0x551e42e680dc854a4b349fa02c1af8aa7b1c8ad85631d9518e2b8fdd86845a90462ec441b8355b7076fc29aeb8a7a1216d24640db84f555ae316c7e60d8128a11c",
    "signer": "0x4582bE7218BF6272417d1F61cA87c4f6d6D7C622",
    "userId": "537052556"
  }
}