{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2713",
    "entityType": "User",
    "nonce": "0x29a6692d4de0a9562505dd19fd719eb783527f582fe7daa9fe0fa9f351d44419",
    "signature": "0x7487969a379c8b9ba739a8a908393a936f029d2c191a33c77596693a0d89b89b646b2d490234935e42e198aa9a10f11dde892ed44a5035cb3fcb97d599cd70021c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}