{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "778523",
    "entityType": "User",
    "nonce": "0x7384ea0ff100a6d54a5189ec25013a8f0e3ae83d6ee84727045c9080fd966cba",
    "signature": "0x725bdbdb57ae4fbff89a16310add9b207788390df2450f32c2d062cf8a94b4b652d58883effdd0fed1a381ac147f0d79ada4e7812fd352b892d75ae440b566991c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}