{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "815915982",
    "entityType": "User",
    "nonce": "0x974753eaab0b1298f6b7ca09f5108cf13ffcd1d671cc80b9dbff6582cfdc7fb0",
    "signature": "0xd6ffd5d024da04e4c18c292b4913238ceb16708a934a82c89c7faaed5a06857801a6089b6b2f6102fa5efa4dab6d7ace2718f6938876d278cd9e0f72d05c95751c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}