{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77991",
    "entityType": "User",
    "nonce": "0xf57f6af998687bdf6c29ec0cdb2a9c21f47fca00c2fd92e67a79687decd70954",
    "signature": "0x073a9056e1f12a6706cbcb0ecf65eb2a3677976a23fdd40bbae84df982c715660fe4fc3666fef07a72b142d18b4610fe14d91647e3ca34dbb5893c5bdb42ed351c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}