{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "137902",
    "entityType": "User",
    "nonce": "0x65b488d616474bee37511d7e2ee575627dcd8b40cd9a45737e3bddb3667256ff",
    "signature": "0x0e031e3fd06d85a60e45a232747b96f3180e4f9c7eb005901c67c5131167fa6b1f7ca52c3defe3b8031947c0510fa7d8315e4c86dcbf33c61844ad235023fdc21b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}