{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "134823",
    "entityType": "User",
    "nonce": "0x5615cf69b6331a59c62589f1ff6a8932b597be97ba06f96d2b6977517fe8c045",
    "signature": "0x64f75935e6a1eaf6f742c8baf321f96e1ffd6cca4f5bd6d34edc409b53b04d1b1e2f2aeb9bf88556ca2d9ce263fc8e8c3c1c287ca936a9576788ec15f9a4cd261b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}