{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "55991",
    "entityType": "User",
    "nonce": "0xd452841646248a97f4f64d8bb013cc0683d09d2f32c1b2c4ab53878ede7e5f45",
    "signature": "0x390bd753e81c5d88505c2201f093c0ec82be601371ad0d085dab6cd26f8767880637255e36fb2627a1a622dce728350bdb1ef1000e13297e3720b0febe2acc6e1c",
    "signer": "0xA262fa1E6a4e2d4fD07d405D0572e986156e8e19",
    "userId": "16238"
  }
}