{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "175425",
    "entityType": "User",
    "nonce": "0x16e0643ce4187aeffff7fbc1b8d27bf7e201a0058ed7f4ef746ed793a8ecddfc",
    "signature": "0x9f4c2f3de834eafd80910884095aa2adf18f4b1d271845ed837173fb230f701e2b2831ce613a89a0229cd4a2bf8fe5f2101b4483da371518eff5eb9d89c88d6e1b",
    "signer": "0x01B77D3DEE1604ED5Cf53774D367c4Ddbb0E7191",
    "userId": "13981074"
  }
}