{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "451684863",
    "entityType": "User",
    "nonce": "0xd3a6d88be394b279e54144cc5518f9397b4e75f14935958d6336bbce8a5ac99d",
    "signature": "0x29e2375c156af01a7052a5948c8c6a1599486f3cbf55f04ece3358f358b3d5310cc5f9dadc877037b5bccc0c0dbb86b6e097642382c1b80931c687289bc23e8f1c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}