{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "209405",
    "entityType": "User",
    "nonce": "0x61fb0d93f7300f2a496d9ae377e8f04300943e2c29fd62662505be9d17425ced",
    "signature": "0x663d712f8179db93f6fe2fcf7bd51617c05da7f932234026ce7458c5bac122eb528a0a78d036cc6526a11dcd5d933fc365c395235c40944f67157b9b386709211c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}