{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9687ebc0e583104f3a49262d264080ce973c38a08397bf9aef8055925ded58bb",
    "signature": "0x82aa27e2e196e45f59135b43075e4f58fea737ddcf48a2276a3b1f387284dce403b53e0149946d99bd2ea5d3f2d1b42e843f2e8db477577427304efa8dfc889e1c",
    "signer": "0x93F80c25b054F6440815694Bd659B02dCF61B689",
    "userId": "340574796"
  }
}