{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x8cd871f7f877f5665238d53286626bceeb868f691d1d230f262ea3a6a602fdab",
    "signature": "0xa7579084bdcc07c897b76dd4f45474fc5fd463ebaacbc0013499aaf56c3ee3fd650f28b071fdac443dd1113280a2e19f2fb15a7d91abef529428cbc3a12fa1f51b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}